Baneling Nest

{t}: Add {b}, {r}, or {g} to your mana pool.
{4}{t}: Create a 1/1 black red and green Zerg token
named Baneling with the ability: "When Baneling
deals damage, sacrifice it,
then deal 5 damage to every creature that blocked Baneling this turn, or to the player or
planeswalker that Baneling dealt damage to."