OGC:Mana Manacles (3.5e Equipment)
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These masterwork manacles are covered with mystical sigils. A spellbane charges the restraints with negative energy, which activates any time the wearer attempts to cast a spell, countering it with dispel magic. A dispel check of 1d20 + 10 is applied against a DC of 11 + the prisoner’s caster level. If the check is successful, the spell is lost.
The manacles will automatically adjust in size to fit any Small or Medium creature.
Moderate Abjuration; CL 10; Craft Wondrous Item, dispel magic, creator must be a spellbane; Market Price: 60,000 gp; Weight: 2 lbs.