Mortuary, Harvester of Souls, and Ugin's Conjurant

Prerequisites

• Mortuary on the battlefield
• Harvester of Souls on the battlefield
• Ugin's Conjurant in hand

Steps

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

Results

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