Mortuary, Realmwalker, and Chamber Sentry

Prerequisites

• Mortuary on the battlefield
• Realmwalker on the battlefield
• Chamber Sentry in hand or in the library
• "Construct" chosen with Realmwalker

Steps

1. Cast Chamber Sentry either from your hand or from the top of your library by paying
2. Chamber Sentry enters the battlefield and dies as a state-based action due to having zero toughness
3. Mortuary triggers, putting Chamber Sentry on top of your library from your graveyard
4. Repeat

Results

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