Yahenni, Undying Partisan + Host of the Hereafter + 2x Persist Creature + Increases +1/+1 Counter Placement but not -1/-1

Prerequisites

• At least one persist creature has a +1/+1 counter on it.
• 2x Persist Creature; Increases +1/+1 Counter Placement but not -1/-1

Steps

1. 1Activate Yahenni by sacrificing the persist creature that has a +1/+1 counter on it.
2. 2When that creature dies, its persist ability and Host of the Hereafter trigger.
3. 3Resolve Host of the Hereafter's ability, putting at least two +1/+1 counters onto the surviving persist creature due to the counter-increasing effect.
4. 4If that creature had a -1/-1 counter on it, remove that and one of the +1/+1 counters from it as a state-based action.
5. 5Resolve the persist ability from step 2, returning the persist creature from your graveyard to the battlefield with a -1/-1 counter.
6. 6Resolve the Yahenni ability from step 1.
7. 7Repeat.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers