> [Monsters, NPC and Animals](srd_monsters.md)

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# Rust Monster

- Alias: [Oxydeur](hd_monsters_oxydeur.md)
-  Medium monstrosity, unaligned
- **Armor Class** 14 (natural armor)
- **Hit Points** 27 (5d8 + 5)
- **Speed** 40 ft

|STR|DEX|CON|INT|WIS|CHA|
|---|---|---|---|---|---|
|13 (+1)|12 (+1)|13 (+1)| 2 (-4)|13 (+1)| 6 (-2)|

- **Senses** darkvision 60 ft., passive Perception 11
- **Languages** -
- **Challenge** 1/2 (100 XP)

## Special Features

**_Iron Scent_**. The rust monster can pinpoint, by scent, the location of ferrous metal within 30 feet of it.

**_Rust Metal_**. Any nonmagical weapon made of metal that hits the rust monster corrodes. After dealing damage, the weapon takes a permanent and cumulative -1 penalty to damage rolls. If its penalty drops to -5, the weapon is destroyed. Nonmagical ammunition made of metal that hits the rust monster is destroyed after dealing damage.

## Actions

**_Bite_**. Melee Weapon Attack: +3 to hit, reach 5 ft., one target.

_Hit_: 5 (1d8 + 1) piercing damage.

**_Antennae_**. The rust monster corrodes a nonmagical ferrous metal object it can see within 5 feet of it. If the object isn't being worn or carried, the touch destroys a 1-foot 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, its 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.

