ACIDIC SECRETIONS | Ex

You secrete an acid that dissolves organic material and metal quickly, but does not affect stone or plastics. These secretions are like slime or sap in consistency.  Acidic secretions allow you to cause an extra 1d6 points of acid damage to successful each successful unarmed strike of natural attack.  As a defense, your acid causes 1d6 points of damage to anyone striking you in melee with a natural or kinetic weapon.  A kinetic melee weapon is entitled to a Reflex save (DC = 11 + ½ character level) by its wielder, or the weapon takes 1d6 acid damage. If you are grappling with a foe or remain in contact with a wooden or metal object for 1 full action, you inflict double your normal acid damage (no save) to the target or object.

You are limited to wearing custom armor or nano-armor with this mutation.

Evolution I:  Your acid damage increases to 2d6.

Evolution II: Your acid damage increases to 4d6.