Altar of Dementia + Dualcaster Mage + Stir the Grave

Altar of Dementia

Dualcaster Mage

Stir the Grave

How it works

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