Rust Monster

CR 1/2 Monstrosity

Monster

Medium Monstrosity, Unaligned

AC
14 (natural armor)
Initiative
+1 (11)
HP
33 (6d8 + 6)
Speed
40 ft.
Ability scores, modifiers and saving throws
Ability Score Mod Save Ability Score Mod Save Ability Score Mod Save
STR 13 +1 +1 DEX 12 +1 +1 CON 13 +1 +1
INT 2 -4 -4 WIS 13 +1 +1 CHA 6 -2 -2
Senses
Darkvision 60 ft.; Passive Perception 11
Languages
None
CR
1/2 (XP 100; PB +2)

Traits

Iron Scent.

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

Actions

Multiattack.

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

Bite.

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

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.

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 of the object.

Reactions

Reflexive Antennae.

Trigger: An attack roll hits the rust monster. Response: The rust monster uses Antennae.

This work includes material from the System Reference Document 5.2.1 ("SRD 5.2.1") by Wizards of the Coast LLC, available at https://www.dndbeyond.com/srd. The SRD 5.2.1 is licensed under the Creative Commons Attribution 4.0 International License, available at https://creativecommons.org/licenses/by/4.0/legalcode.

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