Spike Witwicky, the Uniter

Whenever you cast a white spell, create a 1/1 white Human Soldier creature token.

Whenever you cast a blue spell, scry 2.

Whenever you cast a red spell, Spike Witwicky, the Uniter deals 3 damage to target opponent.

Whenever you cast a green spell, target creature gets +4/+4 until end of turn.