Archon of Falling Stars + Animate Dead + Altar of Dementia

Archon of Falling Stars

Animate Dead

Altar of Dementia

How it works

1. Activate Altar of Dementia by sacrificing Archon of Falling Stars.
2. When Archon of Falling Stars dies, it triggers, returning Animate Dead from your graveyard to the battlefield.
3. When Animate Dead enters the battlefield, it triggers, returning Archon of Falling Stars from your graveyard to the battlefield, and attaching Animate Dead to it.
4. Resolve the Altar of Dementia ability, causing target player to mill cards equal to Archon of Falling Stars' power.
5. Repeat.