Yahenni, Undying Partisan is one of those cards players keep asking about. Here is, in plain words, what its official text says, the rulings published by Wizards of the Coast, and the combos players actually run.
Official card text
Haste Whenever a creature an opponent controls dies, put a +1/+1 counter on Yahenni. Sacrifice another creature: Yahenni gains indestructible until end of turn.
Complete guide
Yahenni, Undying Partisan is a relentless Aetherborn Vampire that thrives on the demise of your foes. This legendary creature is a powerhouse in aggressive black decks, offering both a scaling offensive threat and a nearly untouchable defensive presence.
Growing Through Carnage
Yahenni's primary ability is a triggered ability that watches for the death of any creature controlled by an opponent. Every time an opponent's creature is moved from the battlefield to the graveyard, Yahenni receives a permanent +1/+1 counter. Because Yahenni has Haste, it can begin attacking the moment it hits the field, benefiting immediately from any removal spells you play.
The Path to Indestructibility
Yahenni features a powerful activated ability: by sacrificing another creature you control, Yahenni gains indestructible until the end of the turn. This is a special action that does not cost mana, allowing you to protect Yahenni from 'destroy' effects or lethal combat damage at a moment's notice. Note that you cannot sacrifice Yahenni to its own ability.
Common Pitfalls and Timing
A common mistake involves simultaneous deaths. If Yahenni and an opponent's creature die at the exact same time—such as through a board wipe like Wrath of God or a mutual trade in combat—Yahenni's trigger will occur, but Yahenni will already be in the graveyard. The +1/+1 counter cannot be placed on a creature that is no longer on the battlefield.
When to Deploy Yahenni
Play Yahenni when you have a board presence of smaller creatures to serve as fuel for its protection. It is most effective when you have instant-speed removal ready, allowing you to grow Yahenni during your opponent's turn or right before blockers are declared.
Interaction examples
Roaming ThroneIf you have Roaming Throne on the battlefield with 'Aetherborn' or 'Vampire' chosen, Yahenni's triggered ability will trigger an additional time. Whenever an opponent's creature dies, Yahenni will receive two +1/+1 counters instead of one.
Solemn SimulacrumIf an opponent attempts to destroy Yahenni with a spell like Murder, you can activate Yahenni's ability by sacrificing Solemn Simulacrum. Yahenni gains indestructible and survives the spell, while the 'dies' trigger of Solemn Simulacrum allows you to draw a card.
Guide written with AI from the official text and rulings. Official English text prevails.
How it works : Yahenni, Undying Partisan
Original English text — Wizards of the Coast / Scryfall
- #1· Wizards of the Coast
If Yahenni and a creature an opponent controls die simultaneously (perhaps because they fought or were in combat together), Yahenni won't be on the battlefield as its triggered ability resolves. It can't be saved by the +1/+1 counter that would have been put on it.
No other card is named in this ruling.
Popular combos
Real combos played by the community, sorted by popularity.
Luminous Broodmoth + Yahenni, Undying Partisan
- 1Activate Yahenni by sacrificing the persist or undying creature.
- 2When the creature dies, its persist or undying ability triggers if it doesn't have a -1/-1 counter or +1/+1 counter on it respectively, and Luminous Broodmoth triggers if the creature didn't have flying.
- 3Resolve the persist or undying trigger, if applicable, returning the creature from your graveyard to the battlefield with either a -1/-1 counter or a +1/+1 counter on it.
- 4Resolve the Luminous Broodmoth trigger, if applicable, returning the creature from your graveyard to the battlefield with a flying counter on it if the creature is still in your graveyard.
- 5Resolve the Yahenni ability.
- 6Repeat.
Cathars' Crusade + Yahenni, Undying Partisan
- 1Activate Yahenni by sacrificing the persist creature.
- 2When the persist creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
- 3When the persist creature enters, Cathars' Crusade triggers, putting a +1/+1 counter on each creature you control.
- 4Resolve the Yahenni ability.
- 5Repeat
Mikaeus, the Unhallowed + Yahenni, Undying Partisan
- 1Activate Yahenni by sacrificing the creature with persist.
- 2When that creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
- 3Resolve the Yahenni ability.
- 4Activate Yahenni by sacrificing the persist creature.
- 5When the persist creature dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
- 6Resolve the Yahenni ability.
- 7Repeat.
Gravecrawler + Pitiless Plunderer + Yahenni, Undying Partisan
- 1Activate Yahenni by sacrificing Gravecrawler.
- 2When Gravecrawler dies, Pitiless Plunderer triggers, creating a Treasure token.
- 3Resolve the Yahenni ability.
- 4Activate the Treasure token by tapping and sacrificing it, adding
. - 5Cast Gravecrawler from your graveyard by paying .
- 6Repeat.
Pitiless Plunderer + Reassembling Skeleton + Yahenni, Undying Partisan + Teysa Karlov
- 1Activate Yahenni by sacrificing Reassembling Skeleton.
- 2When Reassembling Skeleton dies, Pitiless Plunderer triggers twice, creating two Treasure tokens.
- 3Resolve the Yahenni ability.
- 4Activate the Treasure tokens by tapping and sacrificing them, adding
. - 5Activate Reassembling Skeleton by paying , returning it from your graveyard to the battlefield tapped.
- 6Repeat.
Thran Vigil + Yahenni, Undying Partisan
- 1Activate Yahenni by sacrificing the creature with persist.
- 2When that creature dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
- 3Thran Vigil triggers, putting a +1/+1 counter on that creature.
- 4Remove a +1/+1 counter and a -1/-1 counter from that creature as a state-based action.
- 5Resolve the Yahenni ability from step 1.
- 6Repeat.
Gorma, the Gullet + Yahenni, Undying Partisan
- 1Activate Yahenni by sacrificing the persist creature.
- 2When the persist creature dies, its persist ability and Gorma trigger.
- 3Resolve the Gorma trigger, putting a +1/+1 counter on it.
- 4Resolve the persist trigger, returning it from your graveyard to the battlefield with at least one +1/+1 counter on it due to Gorma.
- 5Remove a +1/+1 and a -1/-1 counter from that creature as a state-based action.
- 6Resolve the Yahenni ability.
- 7Repeat
Pitiless Plunderer + Reassembling Skeleton + Yahenni, Undying Partisan + Drivnod, Carnage Dominus
- 1Activate Yahenni by sacrificing Reassembling Skeleton.
- 2When Reassembling Skeleton dies, Pitiless Plunderer triggers twice, creating two Treasure tokens.
- 3Resolve the Yahenni ability.
- 4Activate the Treasure tokens by tapping and sacrificing them, adding .
- 5Activate Reassembling Skeleton by paying , returning it from your graveyard to the battlefield tapped.
- 6Repeat.
Legal formats
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