Lucifer Morningstar

+2: Deal 2 damage to target player or creature and gain 1 life
-2: You may summon Lucifer as a 5/5 Devil with Lifelink, Haste and First strike or as a 5/5 Angel with flying and haste for this turn.
-10: Target opponent shows you their hand. You may choose 2 cards, cast one under your control and discard the other.