Rotlung Reanimator + Yahenni, Undying Partisan + Leyline of Transformation

Rotlung Reanimator

Yahenni, Undying Partisan

Leyline of Transformation

How it works

1. Activate Yahenni by sacrificing any other creature.
2. When the creature dies as a Cleric due to Leyline of Transformation, Rotlung Reanimator triggers, creating a 2/2 Zombie creature token.
3. Resolve the Yahenni ability.
4. Repeat.

This elegant feedback loop relies on Leyline of Transformation to redefine every creature you control as a Cleric, seamlessly connecting your board to Rotlung Reanimator's death trigger. Whenever you activate Yahenni, Undying Partisan by sacrificing one of those creatures, Rotlung Reanimator steps in to replace it by spawning a fresh 2/2 Zombie token. Because that new token is also treated as a Cleric by Leyline of Transformation, it can be immediately sacrificed to Yahenni, Undying Partisan to sustain the cycle indefinitely while growing Yahenni's power.