Id, Gate to the Void

Defender, Reach, First Strike
Id, Gate to the Void, can block any number of creatures.
Whenever a Face-down creature enters the battlefield, put a +1/+1 counter on
Id, Gate to the Void.
Remove 3 +1/+1 counters from Id: The next time
you would turn a card face-up for it's Morph or Manifest cost, that cost becomes {0}.
Face-down creatures you control have Hexproof.