Mortuary, Grim Haruspex, and Stonecoil Serpent

Prerequisites

• Mortuary on the battlefield
• Grim Haruspex on the battlefield
• Stonecoil Serpent in hand

Steps

1. Cast Stonecoil Serpent by paying
2. Stonecoil Serpent enters and dies as a state-based action due to having 0 toughness, triggering Mortuary and Grim Haruspex
3. Resolve the Mortuary trigger, putting Stonecoil Serpent from your graveyard onto the top of your library
4. Resolve the Grim Haruspex trigger, causing you to draw a card, thus drawing Stonecoil Serpent from your library
5. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite death triggers
• Infinite storm count
• Infinite draw triggers