Changeling

The changeling is a greater devil. It has a level of ability of 16 and a Will of 15. Its service is to impersonate any humanoid being. Any greater devil will grant a wish of limited power instead of performing its service. They answer the Black Magic spell Summon Greater Demon/Devil and the High Magic evocation Greater Evocation.

Like all devils it comes from Hades, the nine hells, and keeps faithfully to the lawful Order of Ascendancy under Asmodeus. Summoners must be firm: devils aid those of like alignment and purpose but scorn the incompetent and anyone in league with demons, and they attack demons themselves on sight, and every devil dreads the power of good and cannot abide holy symbols. A flaw in the protective circle or triangle frees it to enslave or kill its summoner, and ordering more than its kind owes breaks the pact at once.