Requires

Alela, Artful Provocateur must be on the battlefield. Kor Skyfisher must be in the graveyard. Phyrexian Altar must be on the battlefield. Animate Dead must be in hand. Mana needed:

Steps

1. Cast Animate Dead by paying , targeting Kor Skyfisher.
2. Alela triggers, creating a 1/1 Faerie creature token.
3. Resolve Animate Dead, returning Kor Skyfisher from your graveyard to the battlefield, and attaching Animate Dead to it.
4. Kor Skyfisher enters the battlefield, returning Animate Dead from the battlefield to your hand.
5. Animate Dead leaves the battlefield, triggering itself.
6. Holding priority, activate Phyrexian Altar twice by sacrificing Kor Skyfisher and the Faerie token, adding .
7. Resolve the Animate Dead trigger, causing you to not sacrifice Kor Skyfisher due to it no longer being on the battlefield.
8. Repeat.

Results