Glissa, the Traitor, Grave Pact, Altar of Dementia, and Ornithopter

Prerequisites

• Glissa, the Traitor on the battlefield
• Grave Pact on the battlefield
• Altar of Dementia on the battlefield
• Ornithopter on the battlefield

Steps

1. Sacrifice Ornithopter to Altar of Dementia
2. Grave Pact triggers, causing each opponent to sacrifice a creature
3. Glissa triggers at least once, allowing you to return Ornithopter to your hand
4. Resolve Altar of Dementia's ability, causing target player to mill cards equal to the sacrificed creature's power
5. Cast Ornithopter by paying
6. Repeat until your opponents no longer control any creatures

Results

• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite mill
• Near-infinite sacrifice triggers
• Near-infinite self-mill
• Near-infinite storm count
• Opponents sacrifice all their creatures every turn