Yahenni, Undying Partisan

two generic mana one black mana Legendary Creature — Aetherborn VampirePower and toughness2/2

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.

"The time for subtlety is over, darling."

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0.43 $

Foil 2.59 $

52 printings · up to 3.86 $

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Yahenni, Undying Partisan rulings

2017-02-09
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.

Yahenni, Undying Partisan keyword rules

Haste Rule 702.10

Haste is a static ability.

If a creature has haste, it can attack even if it hasn’t been controlled by its controller continuously since their most recent turn began. (See rule .)

If a creature has haste, its controller can activate its activated abilities whose cost includes the tap symbol or the untap symbol even if that creature hasn’t been controlled by that player continuously since their most recent turn began. (See rule .)

Multiple instances of haste on the same creature are redundant.