Morophon, the Boundless, and Grinning Ignus

Prerequisites

• Morophon, the Boundless on the battlefield
• Grinning Ignus on the battlefield
• "Elemental" chosen with Morophon
• available

Steps

1. Activate Grinning Ignus by paying and returning it to your hand from the battlefield, adding
2. Cast Grinning Ignus by paying due to Morophon
3. Repeat

Results

• Infinite ETB
• Infinite LTB
• Infinite storm count