A layer of acidic slime coats a babau's skin. Any creature that strikes a babau with a See Invisibility Telepathy natural attack or unarmed strike takes 1d6 acid damage from this slime if it fails a Breath save. A creature that strikes a babau with a melee weapon must make a save or the weapon takes this same amount of acid damage; if this damage penetrates the weapon's AC, the weapon gains the broken condition. Ammunition that strikes a babau is automatically destroyed after it inflicts its damage.