Catptured

Tap enchanted creature. It loses all abilities and
does not untap during its untap phase for as
long as this enchantment is in play.
Destroy this enchantment if the enchanted
creature becomes untapped.
If this enchantment leaves play, the enchanted
creatures controller creates a 1/1 white cat token.
"I'm afraid our brave knight won't be part of the
tournament. We have a ... cat situation."