Cognizant Witch Mother

All creatures you control with Defiance have Undying (When this creature dies, if it had no +1/+1 counters on it, return it to the battlefield under its owner's control with a +1/+1 counter on it.)
Ferocious — Cognizant Witch Mother has hexproof if you control a creature with power 4 or greater.
Whenever a creature with power 4 or greater dies Scry 2.