Prior to casting flesh armor, the caster flays the skin from a creature of his size and lays it upon his own flesh, wearing it like clothing or armor.
Book of Vile Darkness 3.5
By Monte Cook
Level: Assassin 4
Components: V, S, M, F
Casting Time: 1 action
Duration: 10 minutes/level or until discharged
Once the caster casts flesh armor, his skin develops resistance to blows, cuts, stabs, and slashes. The caster gains damage reduction 10/+1. Once the spell has prevented a total of 5 points of damage per caster level (maximum 50 points), it is discharged, and the skin slowly rots, shedding in patches like the skin of a molting snake.
Material Component: A bit of flesh torn from the caster’s body during the casting (dealing 1 point of damage).
Focus: The entire freshly harvested skin of another creature of the caster’s size.