Infernal Vessel + Valkyrie's Call + Yahenni, Undying Partisan

Infernal Vessel

Valkyrie's Call

Yahenni, Undying Partisan

How it works

1. Activate Yahenni by sacrificing Infernal Vessel.
2. When Infernal Vessel dies, it triggers, returning itself from your graveyard to the battlefield as a Demon in addition to its other types.
3. Resolve the Yahenni ability.
4. Activate Yahenni by sacrificing Infernal Vessel.
5. When Infernal Vessel dies, Valkyrie's Call triggers, returning Infernal Vessel from your graveyard to the battlefield as an Angel in additional to its other types.
6. Resolve the Yahenni ability.
7. Repeat.