Sister Hospitaller + Wormfang Drake + Carrion Feeder

Sister Hospitaller

Wormfang Drake

Carrion Feeder

How it works

1. Cast Wormfang Drake by paying its mana cost.
2. When Wormfang Drake enters, its first ability triggers, exiling Sister Hospitaller.
3. Activate Carrion Feeder by sacrificing Wormfang Drake.
4. When Wormfang Drake dies, its second ability triggers, returning Sister Hospitaller from exile to the battlefield.
5. When Sister Hospitaller enters, it triggers, returning Wormfang Drake from your graveyard to the battlefield.
6. When Wormfang Drake enters, its first ability triggers, exiling Sister Hospitaller.
7. Resolve the Carrion Feeder ability.
8. Repeat from step 3.