Sister Hospitaller + Goblin Bombardment + Fiend Hunter

Sister Hospitaller

Goblin Bombardment

Fiend Hunter

How it works

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

This clever loop hinges on a recursive resurrection cycle between Fiend Hunter and Sister Hospitaller, where each creature constantly enters the battlefield to fetch or exile the other. Goblin Bombardment acts as the vital catalyst for this engine, providing both a convenient sacrifice outlet to break the loop and a way to weaponize those recurring triggers into infinite damage. As an added bonus, Sister Hospitaller's entry effect continuously nets you life based on the mana value of the creature it returns, turning an infinite death machine into a well of unending vitality.