Heavy Soundproof Call Box

hexproof, Heavy Soundproof Call Box doesn't
untap on it's controllers upkeep step, Counters
remain on permanents as they move to any zone
other than a player's hand or library.
{t}: Exile target permanent from the battlefield,
put a hexproof counter on it.
{ut}:Put target permanent exiled by Heavy
Soundproof Call Box on the battlefield, remove a hexproof counter from it.