Mortuary, Phyrexian Altar, Ornithopter, and Bolas's Citadel

Prerequisites

• Mortuary on the battlefield
• Phyrexian Altar on the battlefield
• Ornithopter on the battlefield
• Bolas's Citadel on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Ornithopter When Ornithopter dies, Mortuary triggers, putting Ornithopter from your graveyard onto the top of your library
2. Cast Ornithopter from the top of your library by paying 0 life
3. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite colored mana
• Infinite sacrifice triggers
• Infinite death triggers
• Infinite storm count