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

Prerequisites

• Altar of Dementia on the battlefield
• Naru Meha, Master Wizard in hand
• Living Death in hand
• available

Steps

1. Cast Living Death by paying its mana cost Holding priority, cast Naru Meha by paying its mana cost
2. When Naru Meha enters, it triggers, targeting Living Death
3. Holding priority, activate Altar of Dementia by sacrificing Naru Meha
4. Resolve the Naru Meha trigger, copying Living Death 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
5. Repeat from step 3

Results

• Infinite ETB
• Infinite LTB
• Infinite mill
• Infinite sacrifice triggers
• Infinite self-mill
• Infinite death triggers
• Infinite magecraft triggers
• Infinite recursion of creature cards in your graveyard