Mortuary, Bolas's Citadel, Phyrexian Dreadnought, and South Wind Avatar

Prerequisites

• Mortuary on the battlefield
• Bolas's Citadel on the battlefield
• Phyrexian Dreadnought in the library
• South Wind Avatar on the battlefield
• available

Steps

1. Cast Phyrexian Dreadnought from the top of your library by paying 1 life
2. When Phyrexian Dreadnought enters, it triggers, causing you to sacrifice it
3. When Phyrexian Dreadnought dies, Mortuary and South Wind Avatar's first ability trigger
4. Resolve the Mortuary trigger, putting Phyrexian Dreadnought from your graveyard onto the top of your library
5. Resolve the South Wind Avatar trigger, causing you to gain 1 life
6. South Wind Avatar's second ability triggers, causing each opponent to lose 1 life
7. Repeat

Results

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