Requires

Feldon of the Third Path must be on the battlefield. Diamond Lion must be in the graveyard. Thornbite Staff must be on the battlefield. Stalking Vengeance must be on the battlefield. Feldon of the Third Path does not have summoning sickness. Thornbite Staff attached to Feldon of the Third Path. Mana needed:

Steps

1. Activate Feldon of the Third Path by paying and tapping it, creating a token copy of Diamond Lion with haste.
2. Activate Diamond Lion by tapping it, discarding your hand, and sacrificing it, adding .
3. Thornbite Staff and Stalking Vengeance both trigger.
4. Resolve the Stalking Vengeance trigger, dealing damage equal to Diamond Lion's power to any target.
5. Resolve the Thornbite Staff trigger, untapping Feldon of the Third Path.
6. Repeat.

Results