Frostbitten

Pointing your conduit at a target’s limb that is within the spell’s range, you send frost energy into it. The target must make a stamina check every ten seconds to resist the energy or take the indicated damage. Failing the check also causes the limb to blacken and gain the effects listed in the special of this spell. If the spell remains active for the entire duration, the limb becomes blackened and gains the numb condition permanently.

The spell ends if the channeler wants it to stop, the target moves too far, the target passes a stamina check, or the time runs out.

Frostbite caused by the spell will make the limb fall off after the specified duration if you try to boost its damage.