Slow Mutation

This curse wreaks a permanent physical change upon the affected creature, according to strictures laid down by the caster.

The spell is cast on an object, such as the end of a staff, where it glows red with the power of its dweomer. Any creature that touches or is touched by the dweomer discharges the effect. A saving throw vs. polymorph is required to avoid the slow mutation. Once triggered, the complete change occurs in 3d6 stages.

The physical effects of the spell vary according to the description given by the caster as the verbal component of the spell. This has two aspects. The first is a condition required to trigger the change (for example, contact with a certain substance, performance of a certain action, etc.). The second aspect is the slow change of the creature's form into that set by the caster during the casting. For example, the creature might turn more into a troll each time it turns invisible; or a person might become increasingly translucent when he pets a cat.

The spell can be eliminated by a successful dispel magic spell while still on the object. Once a creature is affected, only a remove curse can stop the process, allowing a polymorph other, limited wish, or wish cast for this purpose to return the creature to its original form. Once the spell is discharged or dispelled, the object that carried it is again normal in every way.

The material component of this spell is a piece of whatever the caster wishes his subject to become (for example, a kenku feather to turn him into a kenku, or a drop from a potion of invisibility to turn him invisible).