Yr, Ascendant Warden

Monocolored nonland permanents you control have ward —{2}

Whenever you cast Yr you may pay an additional {g/w}{g/w}{g/w}{g/w}, then apply the following depending on the mana spent to cast Yr.
If you spent {u}{b}{r}: gain control of target nonland nonartifact permanent an opponent controls.
If you spent {w}{u}{g}: Draw two cards, then place Yr in your library third from the top.