Mortuary, Masked Meower, Cauldron of Essence, and Bolas's Citadel

Prerequisites

• Mortuary on the battlefield
• Masked Meower on the battlefield
• Cauldron of Essence on the battlefield
• Bolas's Citadel on the battlefield

Steps

1. Activate Masked Meower by discarding a card and sacrificing it
2. When Masked Meower dies, Mortuary and Cauldron of Essence trigger
3. Resolve the Mortuary trigger, putting Masked Meower from your graveyard onto the top of your library
4. Resolve the Cauldron of Essence trigger, causing you to gain 1 life and each opponent to lose 1 life
5. Resolve the Masked Meower ability
6. Cast Masked Meower from the top of your library by paying 1 life
7. Repeat

Results

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