Stomping Ground

{t}: Add {r} or {g} to your mana pool.
As Stomping Ground enters the battlefield, you may pay 2 life. If you don't,
it enters the battlefield tapped.
The power the Abyss Watchers drew from to combat the Abyss evaporated in the fire. Their
home grew acrid, and the allies they left behind
were warped into inhuman creatures.