Barkskin A5E
2nd-level transmutation
The target's skin takes on the texture and appearance of bark, increasing its AC to 16 (unless its AC is already higher).
At higher levels
The target's AC increases by +1 for every two slot levels above 2nd.
Other versions
Source: Adventurer's Guide (EN Publishing) · License: Creative Commons Attribution 4.0 / OPEN GAME LICENSE Version 1.0a details