Requires

Archon of Sun's Grace 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 , returning Kor Skyfisher from your graveyard to the battlefield, and attaching Dance of the Dead to it.
2. Dance of the Dead and Kor Skyfisher enter the battlefield, triggering Kor Skyfisher and Archon of Sun's Grace.
3. Resolve the Archon of Sun's Grace trigger, creating a 2/2 Pegasus creature token.
4. Resolve the Kor Skyfisher trigger, 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 Pegasus 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