# Rust Monster

*Medium* *Monstrosity* *unaligned*

- **Armor Class:** 14 (natural armor)
- **Hit Points:** 27 (5d8+5)
- **Speed:** walk 40 ft.
- **Challenge Rating:** 1/2 (100 XP)
- **Source:** 5.1 SRD (2015 MM), page 343

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

- **Skills:** 
- **Senses:** darkvision 60 ft., passive Perception 11
- **Languages:** 

### Special Abilities

- **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. Non magical 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.<br>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.