Rust Monster¶
Rules source: Monster Manual (2025) · CR: 1/2 · Type: Monstrosity
Combat statistics¶
- Armor Class: 14
- Hit Points: 33 (6d8 + 6)
- Speed: Walk 40 ft.
- Initiative: +1 (11)
- Challenge: 1/2 (100 XP)
- Senses: Darkvision 60 ft., Passive perception 11
- Languages: None
- Proficiency Bonus: +2
- Damage resistances: None listed
- Damage vulnerabilities: None listed
- Damage immunities: None listed
- Condition immunities: None listed
| Ability | Score (modifier) | Saving throw |
|---|---|---|
| STR | 13 (+1) | +1 |
| DEX | 12 (+1) | +1 |
| CON | 13 (+1) | +1 |
| INT | 2 (-4) | -4 |
| WIS | 13 (+1) | +1 |
| CHA | 6 (-2) | -2 |
Revised rules text¶
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.
Reference from your core rulebook¶
The links below open the original rulebook pages for the complete printed stat block, including traits, actions, spellcasting, reactions, and usage limits. The printed block is authoritative if searchable text elsewhere on this page differs.
Monster Manual (2025) — PDF page 266¶
Open the original rulebook — PDF page 266 — source PDF is not included in this player reference.
Printed book page: 263.
Sources¶
- Your supplied Monster Manual (2025) — source PDF is not included in this player reference. — verified local reference
- Monster Manual — original reference dataset (legacy source)
- SRD 5.2.1 (external reference) — complete revised rules block
- Structured SRD transcription (external reference) — searchable text; printed block remains authoritative
All monsters · By CR · By type · By readiness
Icewind Dale - Rime of the Frostmaiden¶
Original campaign references: Rust Monster