Monsterbrew

SRD

Rust Monster

medium monstrosity, unaligned

AC 14

Initiative +1 (11)

HP 33 (6d8 + 6)

Speed 40 ft.

ModSaveSTR 13+1+1DEX 12+1+1CON 13+1+1
ModSaveINT 2-4-4WIS 13+1+1CHA 6-2-2

Senses Darkvision 60 ft. Passive Perception 11

CR 1/2 (XP 100; PB +2)

Iron Scent. The rust monster can pinpoint the location of ferrous metal within 30 feet of itself.

Actions

Antennae. The rust monster targets one nonmagical metal object—armor or a weapon—worn or carried by a creature within 5 feet of itself. Dexterity Saving Throw: DC 11, the creature with the object. Failure: The object takes a -1 penalty to the AC it offers (armor) or to its attack rolls (weapon). Armor is destroyed if the penalty reduces its AC to 10, and a weapon is destroyed if its penalty reaches -5. The penalty can be removed by casting the Mending spell on the armor or weapon.

Bite. Melee Attack Roll: +3, reach 5 ft. 5 (1d8 + 1) Piercing damage.

Destroy Metal. The rust monster touches a nonmagical metal object within 5 feet of itself that isn't being worn or carried. The touch destroys a 1-foot Cube [Area of Effect]|XPHB|Cube of the object.

Multiattack. The rust monster makes one Bite attack and uses Antennae twice.

Rust Monster is from the System Reference Document 5.2.1 (“SRD 5.2.1”) by Wizards of the Coast LLC, used under the Creative Commons Attribution 4.0 International License. Full attribution is on the Licenses & Attribution page.