Norbert, Gift Giver

+3: Create a 1/1 blue human with: "When this creature dies, gain 2 life."
-4: Each blue creature you control gains +2/+1 until end of turn, or target creature gains +4/+2.
-X: Gain control of target creature an opponent controls, X being that creatures power. It gains haste and hexproof until end of turn.