Horus, the Rightful Heir

: If Horus is attacked, he gains 1 loyalty counter.
+2: Gain 1 life. All blue creatures you control gain flying until end of turn. All white creatures you control gain vigilance until end of turn.
-18: Horus cannot be removed from the battlefield. Gain 3 life. All creatures you control gain double strike and trample until end of turn.