The Locust God, Fecundity, and Altar of Dementia

Prerequisites

• The Locust God on the battlefield
• Fecundity on the battlefield
• Altar of Dementia on the battlefield
• You control an additional creature

Steps

1. Activate Altar of Dementia by sacrificing a creature
2. The creature dies, triggering Fecundity, causing you to draw a card
3. The Locust God triggers, creating a 1/1 Insect creature token with flying and haste
4. Resolve the Altar of Dementia ability, causing target player to mill cards equal to the sacrificed creature's power
5. Repeat

Results

• Infinite card draw
• Infinite draw triggers
• Near-infinite death triggers
• Near-infinite ETB
• Near-infinite LTB
• Near-infinite mill
• Near-infinite sacrifice triggers