Mortuary, Masked Meower, Vindictive Vampire, and Bolas's Citadel

Prerequisites

• Mortuary on the battlefield
• Masked Meower on the battlefield
• Vindictive Vampire 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 Vindictive Vampire trigger
3. Resolve the Mortuary trigger, putting Masked Meower from your graveyard onto the top of your library
4. Resolve the Vindictive Vampire trigger, causing you to gain 1 life and dealing 1 damage to each opponent
5. Resolve the Masked Meower ability
6. Cast Masked Meower from the top of your library by paying 1 life
7. Repeat

Results

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