Sister Hospitaller + Fiend Hunter + Bloodflow Connoisseur

Sister Hospitaller

Fiend Hunter

Bloodflow Connoisseur

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 Bloodflow Connoisseur 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 Bloodflow Connoisseur ability.
8. Repeat from step 3.

This elegant loop turns the continuous cycle of life and death into an engine of boundless growth by orchestrating an infinite recursion between Sister Hospitaller and Fiend Hunter. Whenever Fiend Hunter enters the battlefield, it exiles Sister Hospitaller, but sacrificing Fiend Hunter to Bloodflow Connoisseur breaks that exile and sends the Hunter to the graveyard. That death trigger drops Sister Hospitaller right back onto the battlefield, whose own entry trigger immediately reaches into the graveyard to pull Fiend Hunter back out, restarting the cycle. Through this repeating loop of sacrifices and resurrections, Bloodflow Connoisseur grows endlessly large while you pile up infinite life, enter-the-battlefield triggers, and death triggers.