Shadowtheft

Upon successfully casting this spell, the victim's shadow is magically removed and drawn into a specially prepared receptacle. Victims immediately feel weaker and lose half their Constitution value (rounded down), with corresponding losses in hit points (if applicable). Additionally, victims are without a shadow while enspelled but instantly regain both shadow and Constitution points at the end of the spell's duration.

While in possession of the container, the caster can summon a shadowy duplicate of the victim. The duplicate appears only at twilight, although it suffers no ill effects from different light conditions. It persists until dawn. It can speak intelligently when questioned but has none of the victim's memories. It performs any tasks the caster demands, even complicated ones, to the best of its abilities.

This "double" has half of the victim's hit dice or levels (rounded up) and any class abilities at that level. Magical items are not duplicated, nor are spellcasting abilities. The double can be slain, its body vanishing upon death. Any damage done to the double does not harm the victim.

The material components of this spell are a pair of scissors and a special container, This container looks like a small lantern, except that its windows are made of dark, smoky glass. It must be of exceptional quality, costing no less than 1,000 gp, and inlaid with magical runes that surround the intended victim's name. Destruction of the container ends the debilitating effects on the victim and destroys the double. When the container has been used once for this spell, it is rendered useless.