Mortuary, Warhost's Frenzy, and Marketback Walker

Prerequisites

• Mortuary on the battlefield
• Warhost's Frenzy in hand
• Marketback Walker in hand
• available

Steps

1. Cast Warhost's Frenzy with kicker by paying
2. Cast Marketback Walker by paying
3. Marketback Walker enters and dies as a state-based action due to having 0 toughness, triggering Mortuary and Warhost's Frenzy
4. Resolve the Mortuary trigger, putting Marketback Walker from your graveyard onto the top of your library
5. Resolve the Warhost's Frenzy trigger, causing you to draw a card, thus drawing Marketback Walker from your library
6. Repeat from step 2

Results

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