Mortuary, Ashes of the Abhorrent, Bolas's Citadel, and Myr Scrapling

Prerequisites

• Mortuary on the battlefield
• Ashes of the Abhorrent on the battlefield
• Bolas's Citadel on the battlefield
• Myr Scrapling on the battlefield

Steps

1. Activate Myr Scrapling by sacrificing it
2. When Myr Scrapling dies, Mortuary and Ashes of the Abhorrent trigger
3. Resolve the Mortuary trigger, putting Myr Scrapling from your graveyard onto the top of your library
4. Resolve the Ashes of the Abhorrent trigger, causing you to gain 1 life Resolve the Myr Scrapling ability
5. Cast Myr Scrapling from the top of your library by paying 1 life
6. Repeat

Results

• Infinite creature LTB
• Infinite creature ETB
• Infinite creature sacrifice triggers
• Infinite death triggers
• Infinite lifegain triggers
• Infinite storm count
• Infinite +1/+1 counters on creatures you control