Metamorphosis Fanatic + Prowling Geistcatcher + Bloodflow Connoisseur

Metamorphosis Fanatic

Prowling Geistcatcher

Bloodflow Connoisseur

How it works

1. Activate Bloodflow Connoisseur by sacrificing Metamorphosis Fanatic.
2. When Metamorphosis Fanatic dies, Prowling Geistcatcher's first ability triggers, exiling Metamorphosis Fanatic from your graveyard.
3. Resolve the Bloodflow Connoisseur ability.
4. Activate Bloodflow Connoisseur by sacrificing Prowling Geistcatcher.
5. When Prowling Geistcatcher dies, its second ability triggers, returning Metamorphosis Fanatic from exile to the battlefield.
6. When Metamorphosis Fanatic enters the battlefield, it triggers, returning Prowling Geistcatcher from your graveyard to the battlefield.
7. Resolve the Bloodflow Connoisseur ability.
8. Repeat.