Rust Golem (5e Creature)
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Large construct, unaligned
Damage Resistances acid
Immutable Form. The golem is immune to any spell or effect that would alter its form.
Magic Weapons. The golem's weapon attacks are magical.
Rusting Form. Any nonmagical weapon made of metal that hits the golem corrodes. After dealing damage, the weapon takes a permanent and cumulative -1 to attack and damage rolls. If its penalty drops to -5, the weapon is destroyed. Nonmagical ammunition made of metal that hits the golem is destroyed after dealing damage.
Multiattack. The golem makes two melee attacks.
Slam. Melee Weapon Attack: +10 to hit, reach 5 ft., one target. Hit: 15 (2d8 + 6) bludgeoning damage. In addition, nonmagical armour worn by the target is partly dissolved and takes a permanent and cumulative -1 penalty to the AC it offers. The armour is destroyed if the penalty reduces its AC to 10.
Rusting Breath (Recharge 5-6). The golem exhales a cloud of dust in a 15-foot cone. Each creature in that area must succeed on a DC 17 Dexterity saving throw, or any nonmagical metal it is openly wearing or carrying begins to rust. Nonmagical weapons made from metal take a permanent and cumulative -1 to attack and damage rolls. If its penalty drops to -5, the weapon is destroyed.
Rust golems are composed of rusty metal and most often resemble suits of armour, though many are made to resemble rust monsters. A rust golem's touch causes metal objects to rust, and they are far mightier than most creatures with similar capabilities. A rust golem can exhale a cloud of powder that causes metal to corrode, as if the target were struck by one of its rusty limbs.
Constructed Nature. A rust golem doesn't require air, food, drink, or sleep.
Creating a Rust Golem
|100 days||80,000 gp||Very rare|