Long Feng, Grand Secretariat + Yahenni, Undying Partisan

Long Feng, Grand Secretariat

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing a persist creature that doesn't have a -1/-1 counter on it.
2. When the creature dies, its persist ability and Long Feng trigger.
3. Resolve the Long Feng trigger, putting a +1/+1 counter on the other persist creature.
4. Resolve the persist trigger, returning the creature from your graveyard to the battlefield with a -1/-1 counter on it.
5. Resolve the Yahenni ability.
6. Repeat.

This loop relies on **Long Feng, Grand Secretariat** acting as the ultimate catalyst, turning your graveyard-bound permanents into permanent growth for your board while **Yahenni, Undying Partisan** provides the sacrificial outlet. By sacrificing a persist creature without a -1/-1 counter, you send it to the graveyard, which simultaneously fuels Yahenni's hunger and triggers Long Feng's ability to bolster your creatures with +1/+1 counters. When the persist creature returns to the battlefield, the new -1/-1 counter and +1/+1 counter will naturally neutralize each other thanks to state-based actions, leaving the creature completely refreshed and ready to be fed to Yahenni all over again.