Yahenni's Expertise


Format Legality
Pre-release Legal
Tiny Leaders Legal
Magic Duels Legal
Canadian Highlander Legal
Vintage Legal
Modern Legal
Arena Legal
Standard Legal
Leviathan Legal
Legacy Legal
Brawl Legal
Frontier Legal
1v1 Commander Legal
Duel Commander Legal
Oathbreaker Legal
Unformat Legal
Casual Legal
Commander / EDH Legal

Printings View all

Set Rarity
Aether Revolt (AER) Rare
Promo Set (000) Rare

Combos Browse all

Yahenni's Expertise


All creatures get -3/-3 until the end of turn.

You may cast a card with converted mana cost 3 or less from your hand without paying its mana cost.

Latest as Commander

Yahenni's Expertise Discussion

Dango on Banana Seasons Past Control

1 month ago

SynergyBuild Seedborn has been great honestly. I've had it stick for several turn cycles on multiple occasions. It avoids a lot of Pernicious Deed s and Toxic Deluge s fairly well (I ran Yahenni's Expertise at one point, which Seedborn is also out of range of). Now, Notion Thief is something that I don't expect to last long. I usually expect it to bait answers, but I'll cast it on a greedy player's explosive turn to punish them and develop card advantage in the process. If they're smart, they need to find an answer to remove it. However, this guy can really disrupt someone's plans for a turn which works well with my gameplan because I can stall them out.

Chain of Vapor was removed in favor of permanent removal such as destroy and exile effects. I've found myself not needing it, even to protect something on my board.

Nickel-Bolas on An Audience, Granted.

1 month ago

flibety Thank you for your suggestions!

Let me address them in order: First, the reason Thopter Assembly is in the deck is to fulfill one of the win conditions, the combo with Time Sieve for infinite turns. Duplicant is here to act as repeatable removal for problem creatures as a tradeoff for not running as much single-target instant and sorcery based removal, and the same for Noxious Gearhulk . Baleful Strix is there fore early game card advantage, and Wurmcoil Engine is present to act as a threat, because, well, it's Wurmcoil Engine, and Sphinx of the Steel Wind is a threat that bypasses red removal and green reach blockers.

Second, Mycosynth Lattice is in this deck for a couple reasons. The first is that in a combination with Darksteel Forge and Nevinyrral's Disk , it leaves all my permanents intact while also dealing with those of my opponents. Scourglass is for redundancy in case I don't draw any of the aforementioned cards, as it is a solid boardwipe on its own. And Null Rod is in here to combo with the Lattice to cut every player off of mana for the rest of the game and begin a war of attrition, which I will hopefully be able to circumvent using Omniscience .

Thirdly, Nevermore is in the deck as a pre-emptive silver bullet against hosers like Manglehorn or Stony Silence .

And lastly, Yahenni's Expertise is here to provide an out against token decks, at times in which my own creatures matter less than survival. I have one more cut to make to find room for Second Sunrise , which is the prime hit for casting off the expertise.

This is not an all-out combo deck, I'm trying to lean in more on the value side of things, which is why the majority of these cards exist to act in separation from each other, rather than as a fine-tuned machine.

flibety on An Audience, Granted.

1 month ago

You may want to consider cutting one or more of the following creatures: Baleful Strix , Noxious Gearhulk , Duplicant , Sphinx of the Steel Wind , Wurmcoil Engine , or Thopter Assembly . Definitely do not remove them all, but you have quite a few creatures that directly work with artifacts. This means that having quite a few artifact creatures that arent necessarily serving a purpose towards your win condition may be somewhere to start with removing cards.

Mycosynth Lattice should be removed, as it has anti-synergy with Nevinyrral's Disk (it would also destroy all of your lands and planeswalkers), Scourglass (it wouldnt destroy anything), and Retract (it would return all of your lands to your hand). It could also combine with Blinkmoth Urn to massively increase your opponent's available mana. While it does have powerful synergies with some of your planeswalkers, these drawbacks would essentially make it a dead card in hand at best and a powerful asset to your opponent at worst. Are these worth the upsides?

Do you have cards in mind that you would target with Nevermore and do you anticipate facing decks with these cards enough to warrant having this card in your deck?

Most of your creatures wouldnt survive the -3/-3 from Yahenni's Expertise , so which card would you be hoping to play with its effect that would be worth killing off a serious portion of your creatures?

Wouldnt Null Rod affect you negatively much more than your opponent, as you have many artifacts with cost activated abilities?

Kjartan on Slimefoot Modern Saprolings

2 months ago

Don't think Yahenni's Expertise belongs in the mainboard of a token deck. Even though there are situations where it's just the card you want, it's generally just counterproductive.

Dango on Lifegain in Tasigur Control

2 months ago

I updated the list a bit, adding in Damnation as well as Bloom Tender and Freed from the Real for an alternate two-card infinite mana combo. It also works with Arbor Elf to an extent if you also have Utopia Sprawl and can produce blue mana, but that is a little more telegraphed and not as condensed.

With the inclusion of these cards, I had to cut Wild Growth , Chain of Vapor , and Into the Roil . Wild Growth was cut because even though it could be a combo piece with Freed from the Real and Arbor Elf , it can only work on Breeding Pool (or Tropical Island , but I can't afford that at the moment). All of those conditions make that combo incredibly undesirable at the moment. Chain of Vapor and Into the Roil were cut simply because bounce spells just aren't as great as permanent removal that can destroy or exile cards.

I hope these updates help. I think an additional boardwipe is going to do a lot for me, and another infinite mana outlet should make the deck faster and more consistent. I have been doing okay with operating at low life because at that point, someone else's board can start to look scary so all of the people who attacked me early on turn to me and keep me around because they need me to keep someone else at bay haha. However, it just makes me really uncomfortable playing at low life because I can't effectively Ad Nauseam to find a combo piece that I need, and if I stop the threatening player from comboing off, nothing's stopping the next person in the turn order from turning on me again which puts more pressure on me to have answers for them too. Regardless, I think another boardwipe might be good enough to answer a heavy creature presence. I tend to run a lot of cards that hand out 3/3 tokens and a Gilded Drake, so that's why I've favored Yahenni's Expertise as means of crowd control for those primarily, but a wipe that hits everything that isn't indestructible is too good to pass up even though it kills Tasigur.

Thank you guys for your suggestions. I'm gonna try out these updates and see how they perform next time I play. :)

Dango on Lifegain in Tasigur Control

2 months ago

multimedia I was told otherwise on this thread regarding the interaction between the Grim Feast and Toxic Deluge . Perhaps there is a bit of a discrepancy in that regard. I believe the ruling comes down to state-based actions, in which the card in the graveyard is considered a different entity from that of when the card was on the battlefield, and Feast actually sees that creature the moment it dies rather than when it goes into the graveyard. If you think otherwise and would like to revive that thread for more discussion, it might be helpful because I haven't actually seen a definitive ruling on this interaction quite yet so I'm not sure what to believe.

The only other boardwipe I can justify running in my deck is Damnation , and I honestly might run it over Yahenni's Expertise because it hits more targets with the obvious trade-off that it kills Tasigur. What are your thoughts on that? If I were to run Damnation in addition to Yahenni's Expertise what would you recommend cutting?

GuruAg on Teysa's Trending Tea Shop

2 months ago

Golden Demise - I may try more wipe effects. But if I were to run Demise, I should probably run Yahenni's Expertise

Fragmentize - Gotta try this, maybe replace abolish with it.

Massacre - Even with Tymna decks, this seems always worse than Damnation

Collective Brutality - Might try

Thoughtseize - I've been thinking about duress-like effects, but it seems . . . underwhelming in 1x3

Cabal Therapy - Even harder to hit than toughtseize, but the flashback cost is pretty neat.


Ethersworn Canonist and Eidolon of Rhetoric - I avoided stax that do not double as combo, but Eidolon it's almost an auto-included if going that route. Will look for a slot.

Linvala, Keeper of Silence - Ain't this kinda of a Silver Bullet? But gotta say, it shuts Grenzo, Arcum, Thrasios, Jace and now Vannifar.

Sadistic Hypnotist - For a sac outlet, he's way too costly, and only as a Sorc.

Iona, Shield of Emeria - Seems fair

Void Winnower - Same as above

Card Advantage

Scroll Rack - Combos with Land Tax

Ad Nauseam - I happened to grasp one in another game and it did pretty well. Gotta make room for it.


Ashnod's Altar - Blasting Station and Altar of Dementia both fills this role, and double as wincon. Ashnod's ramp rarely helped me out in the old list.

Leonin Squire - It can be usefull, but with so many sugestions, he's down on my priority list for now.


Lotus Petal - Maybe it can help us with Razaketh Lines.

Weathered Wayfarer - Worth the try.

Mox Diamond - We're on 28 lands, and don't have that many T1/T2 wincons, I fear exiling a land may hurt our long term plans

Mox Opal - We run too few artifacts for it to be reliable

Angel_Zero on Living End Fortune

4 months ago

maybe you could try some of the expertise cards from Kaladesh like Yahenni's Expertise, it could give you another way to cast your suspend cards if you don't draw into as foretold.

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Yahenni's Expertise occurrence in decks from the last year

Commander / EDH:

All decks: 0.01%