SRD5:Rust Monster

Rust Monster exists in other D&D editions see:

Rust Monster (disambiguation).

This material from the 5th edition SRD is published under the OGL

Rust Monster [SRD5 OGL]
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: —
Habitat: Underdark, Underground
Challenge: 1/2 (100 xp)Proficiency Bonus (PB): +2
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. Spider Climb. The roper can climb difficult surfaces, including upside down on ceilings, without needing to make an ability check.  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.

End of the SRD5 material

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Unofficial Description: A rust monster appears to be a large insect-like creature with long antennae and tail.

 3.5e lore  ^{[SRD3 OGL]}  

The hide of these creatures varies in color from a yellowish tan underside to a rust-red upper back. A rust monster’s prehensile antennae can rust metals on contact. The typical rust monster measures 5 feet long and 3 feet high, weighing 200 pounds.

Sources and Notes

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