Inhibitor Bands

Wondrous item, rare

While a creature wears this item, it cannot use spellcasting or innate spellcasting abilities, it cannot change form and is immune to having its shape changed with polymorph or similar magic, and it cannot teleport, plane shift, or otherwise magically travel or be moved magically. The bands can be open or closed by a creature that knows the magic word and can be broken with a DC 30 Strength check.