Altar of Dementia + Naru Meha, Master Wizard + Living Death

Altar of Dementia

Naru Meha, Master Wizard

Living Death

How it works

1. Cast Living Death by paying its mana cost
2. Holding priority, cast Naru Meha by paying its mana cost.
3. When Naru Meha enters, it triggers, targeting Living Death.
4. Holding priority, activate Altar of Dementia by sacrificing Naru Meha.
5. Resolve the Naru Meha trigger, copying Living Death
6. Resolve the Living Death copy, causing each player to exile all creature cards from their graveyard, sacrifice all creatures they control, and returning all cards exiled this way to the battlefield under their owner's control.
7. Repeat from step 3.