Primal Prayers, Aetherstorm Roc, and Whitemane Lion

Prerequisites

• Primal Prayers on the battlefield
• Aetherstorm Roc on the battlefield
• Whitemane Lion in hand
• You have at least or enough mana to cast Whitemane Lion

Steps

1. Cast Whitemane Lion by paying due to Primal Prayers, if able, or by paying its mana cost
2. When Whitemane Lion enters the battlefield, it and Aetherstorm Roc trigger
3. Resolve the Aetherstorm Roc trigger, causing you to get
4. Resolve the Whitemane Lion trigger, returning it from the battlefield to your hand
5. Repeat

Results

• Infinite LTB
• Infinite ETB
• Infinite storm count