Whenever you cast a white spell, create a 1/1 white Human Soldier creature token.
Whenever you cast a blue spell,
scry 2
(Look at the top two cards of your library, then put any number of them on the bottom of your library and the rest on top in any order.).
Whenever you cast a red spell, Aragorn, the Uniter deals 3 damage to target opponent.
Whenever you cast a green spell, target creature gets +4/+4 until end of turn.