Barkskin

This material is Open Game Content, and is licensed for public use under the terms of the Open Game License v1.0a.

Transmutation
Level Druid 2, Ranger 2, Plant 2
Components V, S, DF
Casting Time 1 standard action
Range Touch
Target Living creature touched
Duration 10 min./level
Saving Throw None
Spell Resistance Yes (harmless)

Barkskin toughens a creature’s skin. The effect grants a +2 enhancement bonus to the creature’s existing natural armor bonus. This enhancement bonus increases by 1 for every three caster levels above 3rd, to a maximum of +5 at caster level 12th.

The enhancement bonus provided by barkskin stacks with the target’s natural armor bonus, but not with other enhancement bonuses to natural armor. A creature without natural armor has an effective natural armor bonus of +0.