Rick O'Shay, Fearful Beast

When Rick O'Shay, Fearful Beast enters the battlefield, create X 2/2 green Werewolf Tokens,
where X is equal to your devotion to red and
green.
Whenever a werewolf you control deals combat
damage to a player, choose one of the following-
-Add {r}{g} to your mana pool
-Destroy target vampire an opponent controls