Aragorn, the Uniter

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

Whenever you cast a {u} spell, scry 2.

Whenever you cast a {r} spell, Aragorn, the Uniter deals 3 damage to target opponent.

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