Rust Monster (CR 4/MR 1)

This insectile monster has four legs, a strange propeller-shaped protrusion at the end of its tail, and two long, feathery antennae.

Mythic Rust Monster (CR 4/MR 1)
XP 1,200
Pathfinder Roleplaying Game Bestiary
N Medium aberration (mythic)
Init +3; Senses darkvision 60 ft., scent metals 90 ft.; Perception +12


AC 19, touch 13, flat-footed 16 (+3 Dex, +6 natural)
hp 35 (5d8+13)
Fort +2, Ref +4, Will +5
Defensive Abilities DR 5/epic


Speed 40 ft., climb 10 ft.
Melee bite +6 (1d3), 2 antennae +6 touch (rust)
Special Attacks mythic power (3/day, surge +1d6), pounce


Str 10, Dex 17, Con 13, Int 2, Wis 13, Cha 8
Base Atk +3; CMB +3; CMD 16 (20 vs. trip)
Feats Ability Focus (rust), Extra Mythic Power, Skill Focus (Perception), Weapon Finesse
Skills Climb +8, Perception +12


Environment any underground
Organization solitary, pair, or nest (2 mythic rust monsters, 1–8 rust monsters)
Treasure incidental (no metal treasures

Special Abilities

Rust (Su) Each of a mythic rust monster’s antennae is a primary touch attack that causes any metal object it touches to swiftly rust and corrode. The object touched takes half its maximum hp in damage and gains the broken condition—a second hit destroys the item. A mythic rust monster never provokes attacks of opportunity by attempting to strike a weapon with its antennae.

Against creatures made of metal, each of a mythic rust monster’s antennae deals 3d6+5 points of damage. An attended object, any magic object, or a metal creature can attempt a DC 17 Reflex save to negate this effect. The save DC is Constitution- based and includes a +2 racial bonus. If a mythic rust monster spends one use of mythic power as a free action when it hits an attended object, a magic object, or a metal creature with an antennae attack, the object or creature must roll its saving throw twice and take the lowest result.

Scent Metals (Ex) This ability functions much the same as the scent ability, except that the range is 90 feet and the rust monster can only use it to sense metal objects (including creatures wearing or carrying metal objects).

This website uses cookies. See the Legal & OGL page for important information. Any material NOT covered by the Open Game License Version 1.0a is covered by the Creative Commons Attribution-ShareAlike 3.0 License.