Primal Prayers + Guide of Souls + Whitemane Lion

Primal Prayers

Guide of Souls

Whitemane Lion

How it works

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