Mortuary, Bolas's Citadel, Spore Frog, and Venerated Stormsinger

Prerequisites

• Mortuary on the battlefield
• Bolas's Citadel on the battlefield
• Spore Frog on the battlefield
• Venerated Stormsinger on the battlefield

Steps

1. Activate Spore Frog by sacrificing it
2. When Spore Frog dies, Mortuary and Venerated Stormsinger trigger
3. Resolve the Mortuary trigger, putting Spore Frog from your graveyard onto the top of your library
4. Resolve the Venerated Stormsinger trigger, causing you to gain 1 life and each opponent to lose 1 life
5. Resolve the Spore Frog ability
6. Cast Spore Frog from the top of your library by paying 1 life
7. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite death triggers
• Infinite lifegain triggers
• Infinite lifeloss
• Infinite sacrifice triggers
• Infinite storm count