Kassoon

Rust Monster

Rust Monster

Medium monstrosity, unalignedMedium monstrosity, unaligned
Armor Class 14 (natural armor)14 (natural armor)
Hit Points 27 (5d8+5) 27 ([5d8+5])
+/-/*

Speed 40 ft.40 ft.

STR
13 (+1)
DEX
12 (+1)
CON
13 (+1)
INT
2 (-4)
WIS
13 (+1)
CHA
6 (-2)

Token URL:
Saving Throws
Skills
Damage Vulnerabilities
Damage Resistances -
Damage Immunities
Condition Immunities
Senses darkvision 60ft., passive Perception 11darkvision 60ft., passive Perception 11
Languages --
PB +2
Challenge 1/2 (100 XP)

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Iron Scent. The rust monster can pinpoint, by scent, the location offerrous metal within 30 feet of it.
Rust Metal. Any non magical 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.

[b]Iron Scent.[/b] The rust monster can pinpoint, by scent, the location offerrous metal within 30 feet of it.
[b]Rust Metal.[/b] Any non magical 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.

[b]Bite.[/b] Melee Weapon Attack: [+3] to hit, reach 5 ft., one target.
Hit: 5 ([1d8+1]) piercing damage.
[b]Antennae.[/b] 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.

Legendary Actions

 

Details

Most dwarves would rather face a squad of orcs than confront a single rust monster. These strange, normally doclocile creatures corrode ferrous metals, then gobble up the rust they create. In doing so, they have ruined the armor, shields, and weapons of countless adventurers.
A rust monster's body is covered in thick, lumpy armor, its long tail ends in a bony protrusion, and two feathery antennae sprout from its insectile head.
Underground Scavengers. Rust monsters roam subterranean passages in search of ferrous metals such as iron, steel, adamantine, and mithral to consume. They ignore creatures not carrying such metals, but can become aggressive toward those bearing steel weapons and armor. A rust monster can smell its food at a distance, immediately dashing toward the scent's source to corrode and consume the object. A rust monster doesn't care if the rust it consumes comes from a spike or a sword. Adventurers can distract the creature by dropping ferrous objects behind them.
Subterranean Wanderers. Rust monsters are rarely found in large numbers, preferring to hunt alone or in small groups. They meander along tunnels, moving from cave to cave in their tireless search for ferrous metals to consume. Their wanderings often bring them into contact with other Underdark denizens that find them harmless or unappetizing. Thus, rust monsters may be found in close proximity to other subterranean monsters. If they are well treated and well fed, they can
also become friendly companions or pets.
Most dwarves would rather face a squad of orcs than confront a single rust monster. These strange, normally doclocile creatures corrode ferrous metals, then gobble up the rust they create. In doing so, they have ruined the armor, shields, and weapons of countless adventurers.
A rust monster's body is covered in thick, lumpy armor, its long tail ends in a bony protrusion, and two feathery antennae sprout from its insectile head.
[b]Underground Scavengers.[/b] Rust monsters roam subterranean passages in search of ferrous metals such as [i]iron, steel, adamantine, and mithral to consume[/i]. They ignore creatures not carrying such metals, but can become aggressive toward those bearing steel weapons and armor. A rust monster can smell its food at a distance, immediately dashing toward the scent's source to corrode and consume the object. A rust monster doesn't care if the rust it consumes comes from a spike or a sword. Adventurers can distract the creature by dropping ferrous objects behind them.
[b]Subterranean Wanderers.[/b] Rust monsters are rarely found in large numbers, preferring to hunt alone or in small groups. They meander along tunnels, moving from cave to cave in their tireless search for ferrous metals to consume. Their wanderings often bring them into contact with other Underdark denizens that find them harmless or unappetizing. Thus, rust monsters may be found in close proximity to other subterranean monsters. If they are well treated and well fed, they can
also become friendly companions or pets.
 
Source Monster Manual p.262
 
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Monster Statistics by Challenge Rating

CRProf. BonusACHPAttack BonusDamage / RoundSave DC
0+2<131-6<+30-1<13
1/8+2137-35+32-313
l/4+21336-49+34-513
1/2+21350-70+36-813
1+21371-85+39-1413
2+21386-100+315-2013
3+213101-115+421-2613
4+214116-130+527-3214
5+315131-145+633-3815
6+315146-160+639-4415
7+315161-175+645-5015
8+316176-190+751-5616
9+416191-205+757-6216
10+417206-220+763-6816
11+417221-235+869-7417
12+417236-250+875-8017
13+518251-265+881-8618
14+518266-280+887-9218
15+518281-295+893-9818
16+518296-310+999-10418
17+619311-325+10105-11019
18+619326-340+10lll-11619
19+619341-355+10117-12219
20+619356-400+10123-14019
21+719401-445+11141-15820
22+719446-490+11159-17620
23+719491-535+11177-19420
24+719536-580+12195-21221
25+819581-625+12213-23021
26+819626-670+12231-24821
27+819671-715+13249-26622
28+819716-760+13267-28422
29+919761-805+13285-30222
30+919806-850+14303-32023

Damage Severity by Level

LevelSetbackDangerousDeadly
1-41d102d104d10
5-102d104d1010d10
11-164d1010d1018d10
17-2010d1018d1024d10

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