Rust Monster

• AC: 14 (Natural Armor)
• Alignment: Unaligned
• CHA: 6
• CON: 13
• Challenge Rating: 1/2
• DEX: 12
• HP: 27 (5d8+5)
• INT: 2
• Passive Perception: 11
• Roll 0: Bite 1d20 + 3 1d8+1
• STR: 13
• Senses: Darkvision 60 Ft.
• Size: Medium
• Speed: 40 ft.
• Type: monstrosity
• WIS: 13

Traits

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.
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.

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The SendingStone review

The Rust Monster is an intriguing creature in Dungeons and Dragons, with its ability to corrode metal and its low challenge rating of 1/2. Its stats consist of a natural armor class of 14, unaligned alignment, 6 Charisma, 13 Constitution, 12 Dexterity, 2 intelligence, and 27 hit points. Its passive perception is 11, and its only form of attack is a bite that deals 1d2 damage.

Many players find the Rust Monster to be a unique and interesting addition to their campaigns, as it presents a challenge for players who rely heavily on metal weapons and armor. The creature’s ability to corrode metal adds an element of strategy to encounters, as players must consider alternative methods of attack or find ways to protect their equipment.

Overall, the Rust Monster offers a fresh and engaging challenge for players, with its ability to corrode metal and low challenge rating making it an accessible addition to any campaign. Its limited stats and attacks, however, make it less of a threat than other monsters and may require some creativity on the part of the dungeon master to utilize it effectively.

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Rust Monster is D&D (Dungeons & Dragons) 5th edition content, but other TTRPGs may have their own version such as a Rust Monster Pathfinder edition. Want to use Rust Monster in a VTT (virtual tabletop)? Try out SendingStone for free today!

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