Requires

Oketra's Monument must be on the battlefield. Tangleroot must be on the battlefield. Whitemane Lion must be in hand. Chromatic Orrery must be on the battlefield. Mana needed:

Steps

1. Cast Whitemane Lion by paying .
2. Oketra's Monument and Tangleroot triggers.
3. Resolve the Oketra's Monument trigger, creating a 1/1 Warrior token.
4. Resolve the Tangleroot trigger, adding .
5. Whitemane Lion enters the battlefield, returning it to your hand.
6. Repeat.

Results