Strip Scales

Transmutation
Level: Druid * 4, Hunter * 4, Sorcerer */Wizard * 5, Warlock * 5
Components: V, S, M/DF (a single reptile scale)
Casting Time: 1 Standard Action
Range: close (25 ft. + 5 ft./2 levels)
Target: one living creature
Duration: 1 minute/level
Saving Throw: Fortitude
Spell Resistance: yes

You reduce the target's racial Natural Armor Bonus by 1 point per 3 Caster Levels.