Yomiji, Who Bars the Way, Leyline of Singularity, and Lotus Petal

Prerequisites

• Yomiji, Who Bars the Way on the battlefield
• Leyline of Singularity on the battlefield
• Lotus Petal on the battlefield

Steps

1. Activate Lotus Petal by tapping and sacrificing it, adding one mana of any color
2. Yomiji triggers, returning Lotus Petal from your graveyard to your hand
3. Cast Lotus Petal by paying
4. Repeat

Results

• Infinite colored mana
• Infinite storm count