Mortuary, Bolas's Citadel, Myr Scrapling, and Grave Venerations

Prerequisites

• Mortuary on the battlefield
• Bolas's Citadel on the battlefield
• Myr Scrapling in hand
• Grave Venerations on the battlefield

Steps

1. Cast Myr Scrapling by paying its mana cost
2. Activate Myr Scrapling by sacrificing it
3. When Myr Scrapling dies, Mortuary and Grave Venerations trigger
4. Resolve the Mortuary trigger, putting Myr Scrapling from your graveyard onto the top of your library
5. Resolve the Grave Venerations trigger, causing each opponent to lose 1 life and you to gain 1 life
6. Cast Myr Scrapling from the top of your library by paying 1 life
7. Repeat from step 2

Results

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