River Kelpie, Solemnity, and Altar of Dementia

Prerequisites

• River Kelpie on the battlefield
• Solemnity on the battlefield
• Altar of Dementia on the battlefield

Steps

1. Activate Altar of Dementia by sacrificing River Kelpie
2. River Kelpie's persist triggers, returning it from your graveyard to the battlefield
3. River Kelpie enters the battlefield, causing you to draw
4. Resolve the Altar of Dementia trigger, causing target player to mill three cards
5. Repeat

Results

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