Ivy Lane Denizen + Yahenni, Undying Partisan

Ivy Lane Denizen

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing the creature with persist.
2. The persist ability triggers, returning that creature to the battlefield with a -1/-1 counter.
3. Ivy Lane Denizen triggers, putting a +1/+1 counter on the persist creature.
4. Resolve the ability from step 1, giving Yahenni indestructible until end of turn.
5. Repeat.