Custos, Child's Guardian

0: Custos, Child's Guardian becomes a 5/5 Elemental dog token with Hexproof and Indestructible until end, all creatures able to block Custos do so
+2: Create a 1/2 colorless Child token onto the battlefield it has indestructible as long is Custos, Child's Guardian is on the battlefield
-10: Creatures you control gain Flying, Indestructible, Deathtouch, Vigilance, Menace, Double Strike, Hexproof, Reach, and trample until end of turn.