Xenagos, The Captivating

+1: Add {r} or {g}. When this mana is spent on a creature spell, you gain 3 life.
-2: Gain control of target creature for as long as you control Xenagos, The Captivating
-8: You get an emblem with "Creatures you control have trample and get +1/+1 for each creature you control."