Yarus, Roar of the Old Gods + Ashcloud Phoenix + Yahenni, Undying Partisan

Yarus, Roar of the Old Gods

Ashcloud Phoenix

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Ashcloud Phoenix.
2. When Ashcloud Phoenix dies, its first ability triggers, returning it from your graveyard to the battlefield face-down.
3. Resolve the Yahenni ability, giving it indestructible until end of turn.
4. Activate Yahenni by sacrificing Ashcloud Phoenix.
5. Yarus' second ability triggers, returning Ashcloud Phoenix from your graveyard to the battlefield face down, and then turning it face up.
6. Ashcloud Phoenix's second ability triggers, dealing 2 damage to each player.
7. Resolve the Yahenni ability, giving it indestructible until end of turn.
8. Repeat.