Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight + Stormbound Geist + Yahenni, Undying Partisan

Eirdu, Carrier of Dawn // Isilu, Carrier of Twilight

Stormbound Geist

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Stormbound Geist
2. When Stormbound Geist dies, its undying ability triggers, returning it from your graveyard to the battlefield with a +1/+1 counter on it.
3. Activate Yahenni by sacrificing Stormbound Geist
4. When Stormbound Geist dies, its persist ability triggers, returning it from your graveyard to the battlefield with a -1/-1 counter on it.
5. Resolve both Yahenni abilities from step 1 and 3.
6. Repeat.