Imara, Mystical Prodigy

Whenever you cast a blue spell, draw a card.
Whenever you cast a red spell, Imara, Mystical Prodigy deals 2 damage to target creature.
Whenever you cast a white spell, you gain 2 life.
Whenever you cast a black spell, Imara, Mystical Prodigy deals 2 damage to target player
or planeswalker.