Yomiji, Who Bars the Way, Leyline of Singularity, Phyrexian Altar, and Ornithopter

Prerequisites

• Yomiji, Who Bars the Way on the battlefield
• Leyline of Singularity on the battlefield
• Phyrexian Altar on the battlefield
• Ornithopter on the battlefield

Steps

1. Activate Phyrexian Altar by sacrificing Ornithopter, adding one mana of any color
2. Yomiji triggers, returning Ornithopter from your graveyard to your hand
3. Cast Ornithopter by paying
4. Repeat

Results

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