"Any crypt cards" means all of them.
101036
Kaymakli Nightmares
Master.
All Methuselahs move any crypt cards in their uncontrolled regions to their crypts. Any blood counters on them are moved to the Methuselah's pool, and any cards on them are burned. Each Methuselah shuffles his or her crypt and then moves as many cards from his or her crypt to his or her uncontrolled region as he or she shuffled in. Only one Kaymakli Nightmares may be played per game.
Rulings
Crypt cards cannot be put in the library and library cards cannot be put in the crypt.