Mixing table

-{x}: depending on what colors you cast to
use this ability, do the following:
-For every {r}, deal 1 point of damage to a
creature.
-For every {u}, draw a card.
-For every {g}, add a +1/+0 counter to your
creature of choice.
-For every {w}, heal 1 health.
-For every {b}, add a -1/-1 counter to an enemy creature.