Colossal Grave-Reaver + Altar of Dementia + Mortuary

Prerequisites

• You control another nontoken creature whose power is 1 or greater.

Steps

1. 1Activate Altar of Dementia by sacrificing another nontoken creature with power 1 or greater.
2. 2When the creature dies, Mortuary triggers, putting the creature from your graveyard onto the top of your library.
3. 3Resolve the Altar of Dementia ability, causing you to mill cards equal to the creature's power, ultimately milling the creature.
4. 4Colossal Grave-Reaver's second ability triggers, putting the creature from your graveyard onto the battlefield.
5. 5Repeat.

Effects

• Infinite creature ETB
• Infinite creature LTB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite self-mill