Traits
Iron Scent: Here the rust monster able to pinpoint, by scent, of course the location of the ferrous metal within 30 feet of it.
Rust Metal: Any type of nonmagical weapon has been made up of the metal which hits the rust monster corrodes. Anyway after dealing damage, the weapon shall take permanent and cumulative-1 penalty to the damage Rolls. Whenever if its penalty drops to -5, the weapon has been destroyed. The non magical Ammunition made up of metal which hits the rust monster has been destroyed after dealing the damage.
Actions
Bite: By using this bite action this dnd 5e rust monster can make a Melee Weapon Attack: +3 to hit, reach 5 ft., one target. Hit: 5 (1d8 + 1) piercing damage.
Antennae: Here the rust monster corrodes the nonmagical ferrous metal object that it can see within 5 feet of it. However if an object has not being worned or carried, the touch destroys a 1-foot cube of it. Suppose, if an object is being worn or else carried by the creature, the creature can make a DC 11 Dexterity saving throw in order to avoid the rust monster’s touch.
If an object has been touched is either a metal armor or a metal Shield being worn or else carried, then its takes a permanent and cumulative -1 penalty to the AC that it offers. The armor has been reduced to an AC of 10 or a Shield which drops to a +0 bonus has been destroyed. If an object touched is a held metal weapon, then it rusts as described in the Rust Metal trait.
Attributes Of D&D 5E 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 |