Septic Rats


Format Legality
Pre-release Legal
Noble Legal
Leviathan Legal
Tiny Leaders Legal
Magic Duels Legal
Vintage Legal
Modern Legal
Penny Dreadful Legal
Casual Legal
Vanguard Legal
Legacy Legal
Archenemy Legal
Planechase Legal
1v1 Commander Legal
Duel Commander Legal
Unformat Legal
Pauper Legal
Commander / EDH Legal

Printings View all

Set Rarity
Mirrodin Besieged (MBS) Uncommon
Mirrodin Besieged: Phyrexia (MBP) Uncommon

Combos Browse all

Septic Rats

Creature — Rat

Infect (This creature deals damage to creatures in the form of -1/-1 counters and to players in the form of poison counters.)Whenever Septic Rats attacks, if defending player is poisoned, it gets +1/+1 until end of turn.

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Septic Rats Discussion

WillowtheCouncil on Infect

3 months ago

Remove the Flensermite for 3 more Plague Stinger and another Septic Rats.

SKUFFLEZ on No Friends? No Problem (Budget Infect\Wither)

7 months ago

@pints34 another user asked a similar question above. I'd replace 4x Septic Rats for 4x Phyrexian Crusader; in my opinion the protection and first strike outweigh the potential -1/-1 in stats when attacking. Some would say Ichor Rats, but I find the guaranteed poison counter upon entering the battlefield too good to pass up (due to proliferate).

As for Skithiryx, the Blight Dragon, replacing a Plague Stinger is probably the safest choice. You could replace a Kulrath Knight since it has the same converted mana cost and wouldn't affect the curve, but it's also one of the keys to locking your opponent out of the game. Ultimately the choice is yours.

@PickleNutz Happy you enjoyed piloting the deck, I find it shines the brightest in multiplayer formats. I want to note that I haven't scrapped or lowered the potency of my U\G infect deck, I simply play other decks against them like D&D: Dragons and Druids & GW Tron: Wrath of the Titans.

_Kane_ on Relentless Blacks

8 months ago

Feel free to delete my first post *

Ratta Tat Tat Tat. Dont forget Pack Rat!


Swarmyard seems perfect too.

Some more tribal/creature pump:

Metallic Mimic for counters on all of your rats and Adaptive Automaton for a similar lord effect. Akroma's Memorial, Stoneforge Masterwork, Eldrazi Monument, Bad Moon


Attrition, Eliminate the Competition, Mutilate

Card Draw:TBD!!!


Liliana of the Dark Realms, Sol Ring, Black Market

Rat Creature Options:

Ink-Eyes, Servant of Oni, Crypt Rats, Throat Slitter, Patron of the Nezumi, Plague of Vermin, Pack Rat


Ichor Rats, Septic Rats

Potential Cuts (In my opinion):

Prototype Portal Confused on why this is here. Rhystic Tutor Will almost always be countered in multiplayer. Geth's Verdict Better options for targeted removal Murder Howling Mine Black doesnt want to help everyone. Phyrexian Arena FTW.

_Kane_ on Relentless Blacks

8 months ago

Ratta Tat Tat Tat. Dont forget Pack Rat!

Lands: Swarmyard seems perfect too.

Some more tribal/creature pump: Metallic Mimic for counters on all of your rats and Adaptive Automaton for a similar lord effect. Akroma's MemorialStoneforge MasterworkEldrazi MonumentBad Moon

Answers: AttritionEliminate the CompetitionMutilate

Card Draw: TBD!!!

Ramp: Liliana of the Dark RealmsSol RingBlack Market

Rat Creature Options: Ink-Eyes, Servant of OniCrypt RatsThroat SlitterPatron of the NezumiPlague of VerminPack Rat

INFECT: Ichor RatsSeptic Rats

Potential Cuts (In my opinion): Prototype Portal Confused on why this is here.Rhystic Tutor Will almost always be countered in multiplayer.Geth's Verdict Better options for targeted removal MurderHowling Mine Black doesnt want to help everyone. Phyrexian Arena FTW.

XsimonX16 on Relentless Stax

8 months ago

Thanks Daedalus19876,

I've both Coat of Arms and Bad Moon in this deck, I like Bad Moon due to it making everything bigger. Honestly this being my only mono black deck, its most likely the only deck I'll use it in.

I have swapped:

  1. Ichor Rats --> Smallpox
  2. Septic Rats --> Innocent Blood
  3. Swamp --> Bone Splinters

Really wanting to swap Urborg, Tomb of Yawgmoth for Contamination, I didn't even know it existed!

Thanks for the suggestions!

Daedalus19876 on Relentless Stax

8 months ago

I mean, there's not that much to say about a Relentless Rats deck, heh, especially when working under a budget. You have all of the "classical" pieces. A few brief comments, though:

Bad Moon seems underwhelming (perhaps try Coat of Arms instead).

Everglades and Leechridden Swamp ARE bad, play...anything instead (you could cut them altogether, as you're running more lands than I usually would).

Smallpox might work better than Geth's Verdict if you mostly play multiplayer.

Septic Rats doesn't seem like it fits here, because infect and normal damage tend to work at cross-purposes.

If you decide to put a bit more money into this, Contamination, Smokestack, and Necropotence are fantastic cards in a stax deck :)

Balinor5 on Beat You Black and Blue

10 months ago
  1. I hate your enchantments... UU or BB to give your guy infect, when most of your creatures already have it... overkill. You can do much better with that mana. I'd either add removal spells or pumper spells.EDIT: I misread the blue enchantment (didn't realize it was a control magic + infect), but I still don't like it.. I just hate it less. Glistening Oil is pretty bad though IMO.

  2. Not a fan of Septic Rats. BB1 too much for what it does.

  3. Not sure what Vampire Nighthawk is doing in there (although, this card is good in any black deck.. It just doesn't fit the theme).

  4. You can probably do better than Wall of Frost. (Again, avoid the double casting costs unless it really gets you something good).

  5. Same with Whispering Specter... Too easy to kill for what it costs.

I think that Blighted Agent can be your all-star with some pumping effects/protection... if it were me, I'd try to build around that.

Cranial Plating could be good in this deck too, if you run lots of artifacts.

GS10 on Alesha, Who Smiles at Her Bank Account

10 months ago

First of all I want to say that I read your description, so I know you are not trying to make a killer deck out of the bat. I'm going to give you some suggestions, I understand some might be a bit over your budget (even though I'll try and keep the more expensive cards only around a couple bucks) and some might not be as interesting for you considering your specific playgroup and your goal with the deck, but since EDH is the perfect format to develop a deck during longer periods of time, and I strongly encourage everyone who plays to do so in order to create an healthy and dynamic playgroup, I'm going to suggest some changes that will improve both on the power level and consistency of your deck.

My deck is more expensive (but still pretty reasonable considering 100 cards) but it performs really well in competitive environments without overpowering the board in more fun oriented playgroups. You can check it out and maybe you'll find some other cards you don't know about that might be good for you:

Watch out, we've got a badass over here

Commander / EDH* GS10


About your deck now, I'll list the changes I'd make and try to explain why so you can pick and choose when you start making replacements.

I'd definitely take these creatures out: Aviary Mechanic, Battle Brawler, Daru Sanctifier, Enraged Revolutionary, Minotaur Skullcleaver, Rotting Mastodon, Timely Hordemate and Zurgo Helmsmasher

You want your plays and reanimations to be more than vannilla creatures, doesn't matter if they make themselves larger if they are easilly blocked and killed, and definitely, if you are running cards over 2 power which are not targets for Alesha, they must enable something game ending, otherwise you are taking consistency out from your deck and not gaining anything in return.

As for noncreature spells I'd take out: Asha's Favor, Berserkers' Onslaught, Blue Ward, Fear, Messenger's Speed, Protective Sphere, Skeletal Grimace, Demystify, Dragonrage (this is kinda okay with double strike, but still, much better options), Harsh Sustenance, Pay No Heed, Profit / Loss, Showstopper, Tenacity, Uncaged Fury, Uncanny Speed, War Flare, Wing Shards (You have no reasonable way to enable storm, so for 3 mana there are numerous better removal options), Coercion (it's one use only. In a multiplayer game you can't possibly gain advantage from picking one card from one opponent in 99% of situations), Kytheon's Tactics, Spectral Reserves and Terashi's Grasp.

I'd take almost all of those auras and instants/sorceries because in my experience Alesha isn't suited for that. She is perfect for a toolbox commander, so you should enforce that and play effects like destroying enchantments, on creatures that you can recurr as you need them instead of on one spell that can be used once. Again, this is relevant because Alesha can use creatures over and over, but not noncreature spells. In decks like Dralnu and such, it would be the other way around. As for ways to pump your creatures, again, it's a one trick pony and then your opponents will be able to block or remove your threat's easilly. Double strike definitely is not the best option, since Alesha likes small creatures, and double strike on small creatures is underwhelming. The trick is to manage a way to keep the board under control, and win little by little or comboing off with something.

I won't change the land base because that's where most money is usually spent and I avoid that as well. Command Tower, Vivid Marsh and Vivid Crag are solid and not very expensive, but again, I don't usually feel the need to improve that much on mana base. But if you feel you are playing this deck for a long time, I'd recommend you pick up a Chromatic Lantern soon. It's insanely important, since Alesha is , and her ability costs so sometimes getting the colours you need for both soon in the game might be harsh. The lantern just saw a reprint so it's lower on price now than it's ever gonna be for a long time after.

What to include then? I'd change a lot, but since you are playing a deck made of what you had laying around, I understand if you don't. I'll go over a few that you should include if you want to improve on the list and you can pick and adjust as you feel it's right. Also, probably all of these will be in my deck, so you can check it and see if there are other options there that you'd want to play instead of those I suggested you'd switch out:

I hope this was of help, it's really cool you are making a deck out of scraps, per say, so you can easilly bring new players in, that's something admirable, since most times the biggest barrier to new players is the intricate play levels of their potential playgroups. I usually lend my decks to new players until they feel comfortable enough with the format to build their own, but that kind of approach making almost a "limited" EDH deck is pretty cool and perfect to help new players improve. As I said, EDH is perfect to improve deckbuilding in time, so that's an awesome way to kick it off!

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