Shellskin

(See also: Skin Spells)

Of Ships And Sea Text

By means of this spell, the caster fills the skin of an affected creature with a chitinous substance, which hardens to form a layer of armor. The base Armor Class of the protected creature becomes 4, plus an additional 1 to AC for every 5 levels of the priest: the base Armor Class 3 at 7th level. Armor Class 2 at 10th level, Armor Class 1 at 15th level, and so on. In addition, the affected creature makes all saving throws against nonmagical attacks at +1.