Rust Monster

Monstrosity , Unaligned

Armor Class: 14 (natural armor) Hit Points: 33 (5d6) Speed: walk: 8 sqr. (12m)

Passive Perception: 11 Proficiency Bonus: 1

STRDEXCONINTWISCHA
13 (+1)12 (+1)13 (+1)2 (-4)13 (+1)6 (-2)
Actions

Bite: melee attack +3 to hit, reach 1 sqr. (1.5m), one target. 6 (1d8+1) piercing damage. Antennae: The rust monster corrodes a nonmagical ferrous metal object it can see within 1 sqr. (1.5m) of it. If the object isn’t being worn or carried, the touch destroys a 0 sqr. (0m) cube of it. If the object is being worn or carried by a creature, the creature can make a DC 11 Dexterity saving throw to avoid the rust monster’s touch. If the object touched is either metal armor or a metal shield being worn or carried, it takes a permanent and cumulative −1 penalty to the AC it offers. Armor reduced to an AC of 10 or a shield that drops to a +0 bonus is destroyed. If the object touched is a held metal weapon, it rusts as described in the Rust Metal trait.