Acidic Mandibles

"“The skin on your face hardens and sets, becoming smooth, solid and numb. You feel detached from the changes, as though you were merely swapping masks. You move your hands over the new contours of your head, feeling its shape change beneath your fingers. As the movement subsides, you try to speak. A faint chittering is produced, but nothing more.” —In-game description"

Effects

 * 10% Chance to gain Acidic Surge on Critical Hit
 * +40 Health