Junji, the Midnight Sky + Sister Hospitaller + Goblin Bombardment

Junji, the Midnight Sky

Sister Hospitaller

Goblin Bombardment

How it works

1. Activate Goblin Bombardment by sacrificing Sister Hospitaller.
2. Activate Goblin Bombardment by sacrificing Junji.
3. When Junji dies, it triggers, returning Sister Hospitaller from your graveyard to the battlefield and causing you to lose 2 life.
4. When Sister Hospitaller enters the battlefield, it triggers, returning Junji from your graveyard to the battlefield, and causing you to gain 5 life.
5. Resolve the Goblin Bombardment ability from step 2.
6. Repeat.