Demonflesh

(Book of Vile Darkness, DnD 3.0)

Transmutation[Evil]

Level: ; Blackguard 1; Demonologist 1; , Demonic 1
Components: V, S
Casting Time: 1 action
Range: Personal
Target: Caster
Duration: 1 minute/level

The caster grows the thick, leathery flesh of a demon, gaining a +1 natural armor bonus to Armor Class for every five caster levels (at least +1, maximum +4).
This spell has no effect if the caster is an evil outsider.