Requires

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

Steps

1. Cast Dance of the Dead by paying , targeting Kor Skyfisher.
2. Alela triggers, creating a 1/1 Faerie creature token.
3. Resolve Dance of the Dead, returning Kor Skyfisher from your graveyard to the battlefield, and attaching Dance of the Dead to it.
4. Kor Skyfisher enters the battlefield, returning Dance of the Dead from the battlefield to your hand.
5. Dance of the 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 Dance of the Dead trigger, causing you to not sacrifice Kor Skyfisher due to it no longer being on the battlefield.
8. Repeat.

Results