Claustrophobia can target and enchant a tapped or untapped creature.
2015-06-22
The enchanted creature can still be untapped in other ways. Claustrophobia will remain attached, and the creature will continue to not untap during its controller's untap step.
Enchant creature
When this Aura enters, tap enchanted creature.
Enchanted creature doesn't untap during its controller's untap step.
