Mortuary, Masked Meower, Bolas's Citadel, and Grave Venerations

Prerequisites

• Mortuary on the battlefield
• Masked Meower in hand
• Bolas's Citadel on the battlefield
• Grave Venerations on the battlefield

Steps

1. Cast Masked Meower by paying its mana cost
2. Activate Masked Meower by sacrificing it
3. When Masked Meower dies, Mortuary and Grave Venerations trigger
4. Resolve the Mortuary trigger, putting Masked Meower 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 Masked Meower from the top of your library by paying 1 life
7. Repeat from step 2

Results

• Infinite draw triggers
• Infinite rummaging
• Infinite self-discard triggers
• Near-infinite creature ETB
• Near-infinite creature LTB
• Near-infinite death triggers
• Near-infinite lifegain triggers
• Near-infinite lifeloss
• Near-infinite creature sacrifice triggers
• Near-infinite storm count