Rust Monster · CR 1/2
Type: Monstrosity · Size: Medium · Grade: Low (capacity 10 MP) Harvest check: Medicine, Survival or a fitting tool · see Harvesting Creatures
Harvest
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Specific parts
| Part | Classification | Grade | Capacity | Check | Time | Drawback damage | Ruin damage |
|---|---|---|---|---|---|---|---|
| Antennae | Trophy, Unique | Medium | 100 | Medicine or Survival 15 | 5 minutes | Lightning, Necrotic, Slashing | Acid, Fire |
| Corroding Shell | Creature Part, Unique | High | 1,000 | Medicine or Survival 20 | 1 hour | Bludgeoning, Force, Thunder | – |
Drawback damage: +5 DC for each listed type the creature took during the fight. Ruin damage: the part is ruined if the creature took any listed type. See Damage to parts.
Trait parts
Grade = the creature’s grade (Low), DC 10.
- Night Eyes – from Darkvision
Part descriptions
Antennae
Feathery, flexible feelers that are very sensitive to magic.
Good for: detection items (minor fit), e.g. a wand of magic detection.
Corroding Shell
An acidic shell that slowly eats away any metal it touches.
Good for: acid damage or resistance (good fit).
Statblock
Rust Monster – SRD 5.2
Medium Monstrosity, Unaligned
AC 14 · HP 33 (6d8 + 6) · Speed 40 ft.
Score Save Score Save STR 13 (+1) +1 INT 2 (−4) −4 DEX 12 (+1) +1 WIS 13 (+1) +1 CON 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.
Statblock from the System Reference Document 5.2 (CC-BY 4.0). See Credits and License.
Based on Nord Games – Foraging, Harvesting (p. 212); SRD 5.1 (size) – part descriptions rewritten in our own words.