Mortuary, Experimental Frenzy, and Hangarback Walker

Prerequisites

• Mortuary on the battlefield
• Experimental Frenzy on the battlefield
• Hangarback Walker in the library

Steps

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

Results

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