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Image promptrust monster, armored insectoid monstrosity, pebbled rusty-brown carapace, four spindly clawed legs, propeller tail, long feathery antennae, metal weapons and armor crumbling to orange rust and red dust at its touch, corroded weapon-strewn cavern, dark fantasy, grimdark, painterly digital art, dramatic chiaroscuro lighting, muted desaturated palette with corrupted-crimson accents, weathered post-Cataclysm atmosphere, intricate high detail, cinematic composition

Rust Monster

Medium Monstrosity, Unaligned
CR 1/2BruteWilderness
AC 14
Initiative +1 (11)
HP 33 (6d8 + 6)
Speed 40 ft.
STR
13
+1
save +1
DEX
12
+1
save +1
CON
13
+1
save +1
INT
2
−4
save −4
WIS
13
+1
save +1
CHA
6
−2
save −2
Senses Darkvision 60 ft.; Passive Perception 11
Languages None

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

Antennae. The rust monster targets one nonmagical metal object—armor or a weapon—worn or carried Dexterity Saving by a creature within 5 feet of itself. Throw: Failure: DC 11, the creature with the object. 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 Mending removed by casting the 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 Response: monster. The rust monster uses Antennae. Sahuagin Sahuagin Warrior