|Commander / EDH||Legal|
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|Premium Deck Series: Graveborn (GRV)||Common|
|Battle Royale Box Set (BRB)||Common|
|Urza's Saga (USG)||Common|
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Each player puts a creature card from his or her graveyard onto the battlefield.
3 days ago
Hey man! I found you on youtube. I've been searching for fellow Koko players. it's crazy how few of us there are!
I recently built my Kokusho deck and it's become my absolute favorite deck to pilot. I love your deck and I'm totally stealing some of the cards you run. I'm gonna throw my deck at you too and see if you like any of the ideas I have, one fellow Kokusho player to another. These are just ideas or suggestions, take 'em or leave 'em obviously.
Soldevi Adnate - Wait a turn sac outlet. Soldevi can only be used once per turn but it gives you 6 mana!
Mikaeus, the Unhallowed - An extra reanimat in between every reanimate you're able to complete without him. clutch!
Chainer, Dementia Master - Arguable should be the commander, but I prefer him in the 99 myself. But yeah if I could only run one creature in the 99 I think this would be it.
K'rrik, Son of Yawgmoth - So much value, especially if you have a Jet Medallion in play. It feels like you're casting everything for free. K'rrik + Chainer + Koko (in GY or on the battlefield) + any sac outlet = combo for the win.
Villis, Broker of Blood - For us he basically says "x: draw x cards, then draw x cards again" that is mana efficient card draw.
Personally I only run 8 creatures in the 99. These 5 absolutely make the cut. (Gary, Disciple, and Crypt Ghast are my other picks which you are already running. Gonti I sometimes throw in just for fun, he doesn't make the deck more powerful but he's fun to play in casual pods. I like stealing cards from people.)
We actually don't have any sorceries in common. Although I have been considering adding Exsanguinate. Anyway, here are some I suggest:
Reanimate - the Original Gangsta of reanimation. The namesake thereof. Very mana efficient. It hurts us a tiny bit in the life lost department. But you came to the right place if you want some life to spend.
Bubbling Muck - very good min-late game ramp spell.
Damnation - An efficient board wipe. It's basically Wrath of God in black.
Toxic Deluge - Also very efficient for us who love to spend life. It can get around indestructible too. I actually feel like I should be running MORE board wipes. Afterall, I have a creature that wants to die and I have very few other creatures. But these two were the best I could find. I also might add Mutilate .
Demonic Tutor - a Classic.
Diabolic Intent - Sac outlet plus a tutor.
Praetor's Grasp - i love stealing from opponents. You can usually find someone at the table that you think will have an Ashnod's Alter. But you can always find something good.
Scheming Symmetry - I like being political and making deals, this is a good way to do that.
Exhume - I can usually find a time to use it when it won't benefit opponents too much. Either way, it's 2 mana to reanimate Koko.
Footsteps of the Goryo
- 3 mana to reanimate. Plus it sacs at end of turn, although i often have sac'd and reanimated it again by that time.
You have a lot of Graveyard to hand effects, which are great, but I much prefer Graveyard to Battlefield.
Instants. I don't have Thrilling Encore but it is my style of play, so i just might add that one. I don't have Tragic Slip either but I can't say it's a bad card. Definitely a good removal spell.
I do have the other three that you have and they are amazing.
a few more I like:
Abnormal Endurance - 2 mana to pre-reanimate or "Preanimate" if you will.
Corpse Dance - 3 mana to reanimate. Plus Koko can come in and swing for 5 in the air so that's a plus. I almost never attack with him otherwise. Buyback on this makes it an absolute must.
Goryo's Vengeance - 1 mana to reanimate, again with haste! you want a sac outlet though else it exile at end of turn. (sends Koko back to command zone, but still, you're rather he die again of course. This one can actually be spliced onto the other Goryo which is fun and seldom happens. lol plus you can't target Koko with both of them if you do it that way, but hey, maybe you get Gary AND Koko.
Grim Return - 3 mana to bring back anything from any graveyard. Usually Koko, but maybe you want something else from someone else's bin. this can get it done. Instant speed is nice.
Sacrifice - one time sac outlet but also net 5 mana ritual! not bad at all.
Shallow Grave - This one, like Corpse Dance, picks only the top card so be careful the order you put things into graveyard. 2 mana to reanimate. yes please.
Undying Evil - very similar to Supernatural Stamina although I actually prefer this one because it leaves him up to block in case you need that.
Vampiric Tutor - not budget at all obviously. But if you have one, this is a great place for it.
Wake the Dead - Kind of niche, but you can usually sac at instant speed so waiting for opponents turn isn't so bad normally. 3 mana to reanimate Koko and sac him again. already quite good. but you could pay 1 more and bring back Gary too if he's in there. 1 more brings back . . .Runescarred Demon or whatever. it only gets better and better in the late game with more mana available and more cards in the graveyard.
Blade of Selves - So this is my number 1 recommendation. It's my favorite card in all of MTG and it's the reason I even wanted to make this deck. I use BoS in my green decks a lot, and I have never made a black deck before but I kept thinking how awesome this would be on Kokusho so... here we are. As long as you have 3 opponents this card says "at the beginning of your combat step gain 30 life and each opponent loses 10 life." Plus you're swinging for 5 in the air so you can point that at the person with the highest life total and hopefully keep all opponents closer together so you don't get to that awkward late game where Koko dies and only gains you 5 or 10 life. Token copies can be abused as well. For instance, You swing Koko equipped with Blade, 2 tokens ETB, you kill one and then let's say you keep the other one and send the real koko to the graveyard because you have an instant speed reanimate effect but no sac outlet. You reanimate him and bam, legend rule triggers again and you kill him again or kill the token this time. You will have to spend 4 more mana to re-equip Blade but it can be worth it at times. Speaking of token copies of koko...
Minion Reflector - Basically a colorless Bramble Sovereign, another card that I love love love in my green decks. Minion reflector makes a copy, kills the real guy, the copy can attack, then maybe you reanimate Koko and let the copy die this time.
- This can be another Cabal Coffers, or a copy of an opponent's Zendikar Resurgent... it's insanely versatile.
you could stack triggers, making it become a copy of Kokusho and then before that resolves you make it a copy of Soldevi Adnate who you just cast. Soldevi has summoning sickness but Mirage Mirror doesn't so you become a copy of Soldevi, then tap to sac Kokusho and add 6 mana, then the first activation resolves and Mirage Mirror becomes Kokusho who isn't even around anymore. It's tapped, but that doesn't matter much, you can sac it for value, or maybe reanimate Kokusho who comes back into what otherwise would have been no sac outlet but now the legend rule triggers and you get another death trigger. End of turn Mirage Mirror is just a tapped Mirage Mirror again.
Mirror of the Forebears - even cheaper version of Mirage Mirror but not nearly as versatile. I always name "Spirit" because Koko is my only dragon but Crypt Ghast is a Spirit so there's a chance I'll want MotF to be a Crypt Ghast later on. Usually though it just becomes a Kokusho until end of turn to give me free repeatable "sacrifice" (not really but essentially the same thing). speaking of dragons...
Dragon's Hoard - This is fun, although I might take it out because there are more powerful things that could be added. But yeah, it's a 3 mana mana rock. Ramp is kind of important early game when you have a 6 mana commander and your whole deck revolves around him. But then you start adding Gold Counters and now it's an extra card you get to draw pretty much every turn.
Phyrexian Altar - Yeah I'd choose Ashnod's over this but it's a close second. well worth the slot IMO.
Blasting Station - Another great sac outlet. Repeatable. and you can ping down opponents' life totals or ping their small utility creatures.
Bolas's Citadel - This is how you get card advantage in mono black. And with koko we have plenty of life to spend! Finishes the game a little faster too, as soon as opponents are under 10 life you might be able to sac everything and tka 'em to 0.
Cauldron of Souls - Not as good as Mikaeus because he might reanimate Koko 2 or 3 times in a turn, but Cauldron is still awesome and can reanimate everybody you've got. Plus, being an artifact, it's a little more resilient than Mike.
Cursed Totem - I might take this out since stax aren't my style. But it is very powerful. Chainer, Vilis, and Soldevi are the only creatures in my entire deck that this hurts.
Jet Medallion - I'm often casting 3 or 4 spells in a turn so this can really put in the work.
Lifeline - interesting effect. it's symmetrical so be careful. but trust me, you'll get more use form it than they will. But yeah, I'd rather play group hug effects that benefit me more than they rather than stax effects that hurt they more than me. Anyway, this brings back anything that dies at the end of the turn, as long as there is another creature on the battlefield. When i'm not trying to win very hard and I just want a fun interesting game this will often be the target of my tutors. If I wanna win I grab Chainer and K'rrick :)
Strionic Resonator - Guess what's better than getting one death trigger from a dying Spirit Dragon? . . .
Well of Lost Dreams - Draw as many cards as you want for 1 mana each. not a bad deal at all.
Wishclaw Talisman - Another tutor, but one that can make friends. I usually pick the person I want to befriend and I say ""I'ma use the first wish, I'll give you the second wish if you give me the third. Deal?" If they won't make the deal I pick another opponent. Someone is likely willing to do it, and you end up with basically 2 Demonic Tutors.
You have amazing enchantments. I don't yet own Wound Reflection or Exquisite Blood but when I get them they will definitely go in this deck. Black Market is AMAZING, Sanguine Bond is a must. The others I don't run but they are great cards. A few I recommend:
Necropotence - After Vilis this is the best card draw spell in my deck. My playgroup always targets it because it can get crazy ESPECIALLY if you have Thought Vessel or Reliquary Tower in play. I've considered running Shimmer Myr and Vedalken Orrery so I can just draw my whole deck minus 1 or 2 cards, and then chain some rituals into Shimmer Myr into Vedalken Orrery into either a win or a Spellbook to keep my hand. But yeah, I don't run those right now. Just reliquary Tower and Thought Vessel. But even without those, I usually pay enough life to draw up to 10 and then I have to exile 3 cards. But it's so much card draw and card selection!
Attrition - Very nice creature removal
Gate to Phyrexia - Very nice artifact removal, although it has been annoying that it can only happen at upkeep. Still worth though!
Tainted AEther - Super mean stax piece. Great for the Kokusho player, not great for anyone else.
Lethal Vapors - This one is even meaner somehow. And I love that it has it's own demise onit. like "hey, you're welcome to end this meanness any time you want man..." My friends have learned to just kill it as soon as it comes out, it's just a matter of who will be the one to lose a turn for the team. pretty funny stuff.
Dawn of the Dead - Kinda like Lifeline but even better IMO. It reanimates at upkeep and gives haste. It's interesting that this and Cauldron of Souls and Chainer and Mikaeus and Lifeline and Corpse Dance with buyback all cost 5 mana. Apparently that's the sweetspot for repeatable reanimates.
Unholy Indenture - A preanimate effect that can steal opponents' creatures if you want to use it for that.
Kaya's Ghostform - Another preanimate for only 1 mana. Also beings it back from exile! I noticed you have a couple planeswalkers as well, this can bring them back too, with renewed loyalty of course, and ready to use a second tie if you killed them on your turn. It's just 1 mana! insane!
Necromancy , Dance of the Dead , and Animate Dead are three more reanimate spells. They have a lot of text but basically they bring koko from GY to battlefield. All three can steal from opponents' graveyards if you so choose. Necromancy can be played as an instant.
I'm currently re-thinking my lands package. I have Field of the Dead so I've kind of gone pretty heavily into running all differently named lands. I have a few Swamps, a few Snow-Covered Swamps, and then a bunch of great stuff and a bunch of janky terrible stuff lol. But I'm thinking i might clean it up a bit and go with more basics to help out Cabal Coffers more.
I'm super jealous of your Cavern of Souls. I would love to get one of those someday. And I too run Glacial Chasm. It can be a really important card in some games. A funny janky combo that I've never done but hope to one day is to have Glacial Chasm in play and Lethal Vapors and then I activate Lethal Vapor's skipping my next turn, but before it resolves and kills Lethal Vapors I activate it again, 1 billion times. Then it dies and I skip all my turns from now on, and if opponents don't have a way to destroy Glacial Chasm, or to drain me of life, then they eventually mill themselves out and lose. Obviously this is very situational, most of the time I feel like they'd be able to find a way to win, but it would be funny nonetheless.
Anyway, good card. Also Nephalia Academy. I didn't even know about that card but I'ma get one and start playtesting it. very interesting effect!
Geier Reach Sanitarium - Sometimes you really want a certain card in your graveyard, this can help you put it there.
Urborg, Tomb of Yawgmoth - A classic. Don't forget it might help opponents too though.
Cabal Coffers - Pair with Urborg, Tomb of Yawgmoth for lots of manas.
Gemstone Caverns - Possible turn ramp with little downside.
Ancient Tomb - better in the early game than Temple of the False God. The life loss can add up though, even in a Kokusho deck. In casual meta with longer games it isn't quite as good as it is in cEDH.
Bojuka Bog - Your enemies might be as keen to play from their graveyard as you are. Hit them before they hit you.
Boseiju, Who Shelters All - depending on your meta it might be really important to have uncounterable sometimes. Especially when you tap out to cast a huge Exsanguinate. Nothing worse than having that Mana Drain'd
Buried Ruin - I have several Artifacts I love in this deck, but most of all my baby, Blade of Selves.
Field of the Dead - a powerhouse late game.
High Market - a sac outlet on a land. Run this card! and speaking of sac on a land...
Phyrexian Tower - this is super clutch. It's only once per turn but it's really really good to have.
Diamond Valley - ok I admit I don't own this so it's not in my deck. but if i had a spare 1000 bucks.... this is a great card. It doesn't tap for mana unless you have Urborg, Tomb of Yawgmoth in play though.
Miren, the Moaning Well - a poor man's Diamond Valley. It does tap for mana though so it's got that over DiamondV. but it will cost 3 to tap it and sak Koko.
Mirrorpool - This taps for colorless, and comes into play tapped. so that suck. but... it can become a Kokusho token to that's pretty cool.
Nykthos, Shrine to Nyx - An auto-include in any mono-color deck.
Reliquary Tower - Often overplayed in EDH but in a deck with Vilis or Necropotence it is definitely worth a slot.
Shizo, Death's Storehouse - Not worth it to buy this one for Koko. You pretty much never use it to give him Fear. But it is a differently named card for my Field of the Dead and there's not much downside so... I have it in there for now.
Thawing Glaciers - I think i might take this one out. I don't have many early game ramp spells so I thought this might be good but omg it's so slow! it was aptly named.
Witch's Cottage - This one is up your alley since you like returning from GY to top of library.
Volrath's Stronghold - is another such card with a very similar effect you might like.
I have Vesuva which usually copies Cabal Coffers. and I have Thespian's Stage and Dark Depths for my boi Marit Lage. They make for fun things to tutor from your two wishes on Wishclaw Talisman. There are stronger things that could be done but if you feel like just being silly and smashing face with a 20/20 indestructible flier then there's always that option.
Urborg is a silly land to run, i mean there's no downside other than it isn't a swamp. But there's really no upside either except for people saying "what the hell is that?" which can be fun. Most people have never heard of it and have been calling Urborg, Tomb of Yawgmoth by this name without realize it belongs to another.
Well if you made it to the end of my novel, congratulations. Let me know what you think of these cards and stay in touch so we can bounce Kokusho ideas off of each other.
1 week ago
reanimator effects are your friend. recurring ichor rats and proliferating just wins a lot of the time. Animate Dead , Reanimate , Exhume (this one is iffy) and Entomb should all be auto-includes into decks like these, if not for ichor rats synergies, for general good stuff that wins through aristocratting
2 months ago
Phyrexian Delver so we can get a sac outlet like vicera seer off of our first hulk trigger.
2 months ago
Hey man! I always like Esper. Here're some suggestions; feel free to ignore any or all of them:
In your description, you say you need help with win conditions. I think it's important to keep in mind, if you don't already, that too many win conditions will actually hinder your deck. This is because with more discrete combos, you raise the number of 'dead' draws in your deck; drawing half of two combos that don't go together makes Jac a sad boi. So while I do agree you could use more win conditions, I think only adding another one or (maybe) to is probably the best route.
In the spirit of (1), you may find that having a powerful reanimation package can be one of the secondary win cons you're looking for. Tidespout Tyrant used to be one of the top reanimation targets in legacy (maybe it still is -- I don't understand that format anymore), and running him will let you draw Animate Dead sans Leonin Relic-Warder and still have a good shot at winning.
To that end, you should run Entomb and Buried Alive . Tutoring to the 'yard not only puts your Leonin Relic-Warder right where you want him, but also your Sheoldred, Whispering One /any other reanimation targets you may want. There're some other reanimation spells to consider, some that work with Leonin Relic-Warder and some that don't. Consider: Reanimate , Exhume (if you wanna get spicy), Dance of the Dead and/or Unburial Rites . Unburial Rites is one of my favorite cards, especially since you can tutor it with Entomb .
I think Path to Exile is strictly worse, in EDH, than Swords to Plowshares . Ramping an opponent in a format where everyone is doing busted stuff is dangerous, but giving them six or more life points may be irrelevant, especially since this seems to be a combo deck.
Your Brainstorm is good, but it'd be better with more shuffle effects in your deck. While Prismatic Vista and the other generic fetches (see Marsh Flats , etc.) can be very expensive, slow fetches like Flood Plain and/or Bad River are fine alternatives.
In addition to your Brainstorm , I cannot recommend Ponder and it's lil' brother Preordain highly enough. These two may not look like much, but being able to dig to what you need and past what you don't for one mana is a pretty great feeling. I run them in all my blue decks, and (with very limited exceptions) always like drawing them.
You've got some pretty good rocks, but there're ways to improve your ramp base. I've been very impressed with the talismans ( Talisman of Dominance , Talisman of Hierarchy and Talisman of Progress ) as slightly-better signets, and it's important not to discount Thought Vessel , Everflowing Chalice or Mind Stone .
You have some very powerful artifacts: Bolas's Citadel , Thornbite Staff , and Lifeline all seem like game-changers in this deck. Consider running Whir of Invention to get them out when you have the mana. Reshape or, if you're rich, Transmute Artifact are also good. Non-to-battlefield tutors, like Demonic Tutor , Enlightened Tutor or Vampiric Tutor are good, but expensive; like with fetch lands, there're other, more accessible options. Consider Diabolic Tutor , Lim-Dul's Vault , Beseech the Queen and/or Dark Petition , which are all fine tutors in themselves.
If you don't have fundamental issues with counter-magic, you should run some -- it'll protect you and your combo. Gold-standard counters ( Force of Will and Mana Drain ) are expensive AF, but you can consider other perfectly powerful options as well. Counterspell is good, and I've been very impressed with Spell Snare (which counters an overload-ed Cyclonic Rift REALLY nicely). If you've got Ad Nauseam players like me in your play ground, Dispel can be a worthy inclusion; Dovin's Veto is another combo-breaker for high-power tables.
To return to (1-3), you may want Aetherflux Reservoir as another win condition since it combos so nicely with Bolas's Citadel . If you can get a Sensei's Divining Top in the mix, things get nutty pretty quick.
Right. That's all I got. Good luck!
2 months ago
Hey nice deck; I love graveyard builds.
Maybe Exhume would be good for an early-play for ya. I use it to devastating effect in my speed dredge build. Give it a look down below if you want some more ideas perhaps; but I like the direction you went here.
Budget Speed Dredge: http://tappedout.net/mtg-decks/budget-speed-dredge-two-5-card-golden-hands-1/
2 months ago
There's a few cards that I would suggest for your deck since you're mono-black. Gauntlet of Power and Caged Sun are both amazing ways to ramp, and both buff your entire board. Bubbling Muck is almost always better than Dark Ritual . And if you're running snow-covered swamps, I'd take a look at Dead of Winter .
There's also a bunch of really good reanimator/aristocrats stuff I feel like you're missing. Corpse Connoisseur is an amazing way to dump creatures into your grave. Pitiless Plunderer has a great death payoff. Life's Finale lets you look through an opponent's deck for reanimation targets. The upcoming Syr Konrad, the Grim looks crazy for this deck. And lastly, Sidisi, Undead Vizier is an amazing, recurrable tutor.
3 months ago
At least in the playgroup I use this deck in, Enchantment hate isn't super-common, but it's definitely not unheard of either. There's an array of 1 and 2-mana instants that an opponent can use to smite one off in the event I'm playing against a deck that includes it. Since Annihilator is the crux of the win strategy, that'd be unfortunate in gaining the upper hand.
Shallow Grave could be interesting to try, and yes I'm very much aware of Dark Ritual haha. The issue there is that with 3 mana the only (current) Graveyard-to-Play effect I can use it for in the deck is Exhume . By using Culling the Weak it allows me to pick from the vast array of 4-mana spells with that effect, Dread Return just happened to be my best available choice of cards that I had on-hand.
I'm still up in the air on whether to deviate from the concept of this deck of all budget cards. Entomb certainly doesn't apply (at least to my standard), but Buried Alive could be a solid choice. If I were to make this deck to play on MTGO I'd definitely include Entomb , but those are some really solid suggestions!
Thank you very much, sir! You've given me some things to ponder on this build for sure.
3 months ago
Hello! So a lot of my suggestions will depend on budget/card access; since I don't know what yours is, I'll just leave all of the suggestions I think of. Feel free to ignore me.
The first thing I think of when I think of a 'demon' deck is Shadowborn Apostle . With a critical mass of these lil' buggers, you can just tutor out whichever demon is good for any given situation. Pair them with Thrumming Stone for instant fun. To take that strategy a little farther, you might consider running Shirei, Shizo's Caretaker as your general. I know he's not a demon, but his synergy with the Shadowborn Apostle s makes him an honorary demon, as far as I am concerned.
Ramp is a premium in EDH. I notice you have a few rocks already in your deck; however, I think there're better ones you can run. In general, two-mana mana-rocks are going to be a lot better than three-mana mana-rocks, if only because once you're at three mana you typically want to be doing more than just ramping. I like your Jet Medallion ; consider Thought Vessel , Mind Stone , Charcoal Diamond , Coldsteel Heart , Prismatic Lens , Mana Vault , Mox Diamond and Mana Crypt . With as many artifacts as you have, Mox Opal is usually going to be online, too.
Land-wise, I must confess confusion as to why you're running Command Tower . If I am not missing something, it's a Swamp that dies to Wasteland , Back to Basics , Blood Moon , Magus of the Moon , Ruination , Dust Bowl and friends. I think you should replace it with a basic Swamp . Temple of the False God is a land I have mixed feelings about, as it isn't exactly the sort of land you want to see in your opening seven; that being said, it can be powerful late-game. Consider Ancient Tomb , as (since it was reprinted recently) it is at a relatively low price, and it can cast two-mana mana-rocks on turn one. Additionally, in mono-black, Cabal Coffers and Cabal Stronghold are very powerful mana sources. Pairing them with Deserted Temple works pretty well, too. Consider Lake of the Dead , Shizo, Death's Storehouse and Phyrexian Tower as good utility-lands. Also, you could probably use two to four more lands in your list. Twenty-eight is pretty much were I tend to bottom out on land-count, at that's when I'm running all the zero-mana mana-rocks.
Card-draw, card-selection and tutoring are all also very important in EDH. Demonic Tutor and Vampiric Tutor are the gold-standard for tutors, though their prices tend to make them rather inaccessible. Scheming Symmetry is a good tutor if your general is out; similarly, Maralen of the Mornsong seems... worth trying. Presumably, someone is going to take thirteen and kill her, but she's probably pretty good anyway. Diabolic Tutor , which I see you run, is a good option; Dark Petition , Mastermind's Acquisition and Beseech the Queen also come to mind. In the vein of card-draw, consider Night's Whisper , Ambition's Cost , Read the Bones , Phyrexian Arena , Twilight Prophet , Staff of Nin , Ancient Craving , Sign in Blood , Necropotence , Harvester of Souls , Null Profusion , Succumb to Temptation and friends. Graveborn Muse is good even as just a second Phyrexian Arena if you only have one zombie out. If you pair Waste Not with Words of Waste , you can also generate card-advantage. Almost as good as card-draw is preventing your opponents from drawing cards -- unfortunately, in mono-black this is pretty much just Chains of Mephistopheles , which costs about as much as a used kidney these days. Usually I'd suggest Narset, Parter of Veils or Spirit of the Labyrinth .
In terms of removal, you typically don't want to settle for one-for-ones. In EDH, you're generally facing three opponents, which means you're facing three times the number of creatures/threats that you would be facing in a one-v-one. So trading a card for just one creature is often times just not enough. I don't think Ob Nixilis's Cruelty or Unholy Hunger are very good, for that reason. You may have more luck with Ashes to Ashes , Toxic Deluge , Damnation and the like... perhaps even Hex , though keep in mind you'd need six targets on the field to even cast it. Decree of Pain , Overwhelming Forces , Mutilate and Rain of Daggers are also worth considering. Black also has access to some fun pox-style cards. Innocent Blood , Barter in Blood , Liliana's Triumph or Smallpox can all be powerful in the early-game, if you're ramping with artifacts and don't have any important creatures out yet. Similarly, I should mention Pox itself -- this is easily one of the most brutal cards to resolve in EDH, right behind Ravages of War , Armageddon and Cataclysm . I haven't had much luck with it, but depending on your meta Pox may be a powerhouse.
In the Stax/Pox vein, you might consider Night of Souls' Betrayal . Doing away with some of your X/1s would make this a powerhouse, and it is an insta-kill against elf- or goblin-decks. In the right meta, Yixlid Jailer is good; though bear in mind it's a straight nonbo with Night of Souls' Betrayal .
I see you're running Leyline of the Void . Consider pairing it with Helm of Obedience . If you activate Helm of Obedience targeting an opponent while Leyline of the Void is out, the mill from the helm will be replaced with exiling the card. Thus, Helm of Obedience just makes the opponent keep trying to put the top card of their deck into their graveyard and keep exiling it instead. This results in exiling your opponent's library, and leaving Helm of Obedience tapped on the field. This combo only takes out one opponent at a time, is sure to draw a lot of hate, and requires several tutors to make it consistent, but I figured you might be interested in it. If you're good at politics (I'm not), it can be a pretty powerful A-Bomb.
In mono-black, you should consider a reanimator package. Buried Alive or Entomb combined with Animate Dead , Reanimate , Necromancy , Victimize , Dance of the Dead or even Exhume can get a fatty on the table real fast. Entomb -ing Lord of the Void turn one and Reanimate -ing him turn two (or even turn one, if you run Dark Ritual or Lotus Petal ) seems pretty good to me. Whip of Erebos is also a form of permanent-based reanimation, which has the added bonus of gaining you life.
If you're having trouble killing opponents, consider Helm of the Host . This'll add a new threat to the board every turn, provided you can keep one on the table. Bloodchief Ascension also puts down one hell of a clock. Doom Whisperer , Herald of Anguish , Carnifex Demon and Desecration Demon are all additional demons to consider.
Finally, in terms of what to cut: Start by looking for inefficient cards or over-redundant/unnecessary/underwhelming effects. Keep an eye on those cards when you play, and if you're often seeing them, wishing you could just discard them and draw another card, that's a card you should cut. It might be a baller effect, but if the cost is too high or the effect to narrow, it isn't worth running.
Good luck, man!
Exhume occurrence in decks from the last year
Commander / EDH:
All decks: 0.01%