3,000 GP, 1 lbs
This collar is made from a special variety of lodestone known to short out magical energies. It can be fitted around a small or medium creature's neck and makes the use of all spells, spell-like abilities, and supernatural abilities impossible until removed. It has rings that allow it to be secured with a lock. A creature must be willing, helpless, or pinned to be fitted with the collar as a full round action.
What do you think?