Pledge To War

Whenever you cast a red spell, create two 3/1 red
Goblin Berserker creature tokens with trample.
Whenever you cast a white spell, you gain 2 life
and create a 1/3 white Human Warrior creature
token with double strike.
Whenever you cast a black spell, you draw a card
and create a 2/2 black Elf Archer creature token
with reach.