Hero: Opal

Whenever you cast a white spell, create a 1/1 colorless sidekick creature token.
Whenever you cast a blue spell, Draw a card.
Whenever you cast a red spell, Opal deals 2 damage to target opponent.
Whenever you cast a green spell, target
creature gets +2/+2 until end of turn.
Whenever you cast a black spell, target
creature gets -1/-1