Mortuary, Grim Haruspex, and Chamber Sentry

Prerequisites

• Mortuary on the battlefield
• Grim Haruspex on the battlefield
• Chamber Sentry in hand

Steps

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

Results

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