Altar of Dementia + Dualcaster Mage + Corpse Dance

Altar of Dementia

Dualcaster Mage

Corpse Dance

How it works

1. Cast Corpse Dance by paying its mana cost, targeting any applicable target.
2. Holding priority, cast Dualcaster Mage by paying its mana cost.
3. When Dualcaster Mage enters, it triggers, targeting Corpse Dance.
4. Holding priority, activate Altar of Dementia by sacrificing Dualcaster Mage.
5. Resolve the Dualcaster Mage trigger, copying Corpse Dance, with the copy targeting Dualcaster Mage
6. Resolve the Corpse Dance copy, returning Dualcaster Mage from your graveyard to the battlefield.
7. Repeat from step 3.