The smoke devil is a mutated version of a Dust devil, found at the Smoke Devil Dungeon. These require a minimum of 93 Slayer to kill. A Slayer helmet, Slayer helmet (i), or a Facemask is required to kill these. This monster, along with its boss variant and superior variant, are the only monsters to drop the Occult necklace.
Smoke devils reside in a multi-combat area, so players can burst/barrage or use chinchompas on them, though the latter is ineffective due to their high defense. Magic works well on smoke devils, as an NPCs magic resistance is based off their Magic level, which is negligible. Given the fact that the smoke devil chamber is very large, bringing a cannon is recommended to get their attention. The various remains that litter the chamber act as "walls", so smoke devils can be stacked on top of one another for bursting/barraging quickly by hiding behind a pile of remains.
Drops
100% drops
Item Quantity Rarity GE market price 
Ashes 1 Always 72
Runes/Ammunition
Item Quantity Rarity GE market price
Fire rune 37; 150 Common 185–750
Smoke rune 10–40 Common 710–2,840
Air rune 37 Uncommon 185
Soul rune 10 Uncommon 1,460
Rune arrow 24 Uncommon 1,680
Runite bolts 15 Uncommon 6,045
Weapons/Armour
Item Quantity Rarity GE market price
Adamant battleaxe 1 Common 2,157
Mithril plateskirt 1 Common 1,272
Fire battlestaff 1 Uncommon 8,982
Rune dagger 1 Uncommon 4,391
Air battlestaff 1 Uncommon 8,948
Black d'hide vamb 1 Uncommon 2,362
Red d'hide body 1 Uncommon 5,932
Rune full helm 1 Uncommon 20,588
Rune chainbody 1 Uncommon 29,475
Rune 2h sword 1 Rare 37,758
Occult necklace 1 Rare (1/512) 496,473
Dragon chainbody 1 Very rare (1/32,768) 375,127
Herbs
Item Quantity Rarity GE market price
Grimy guam leaf 1 Common 15
Grimy marrentill 1 Common 13
Grimy tarromin 1 Common 132
Grimy harralander 1 Common 674
Grimy irit leaf 1 Uncommon 775
Grimy avantoe 1 Uncommon 1,814
Grimy kwuarm 1 Uncommon 1,165
Grimy cadantine 1 Uncommon 1,312
Grimy dwarf weed 1 Uncommon 448
Grimy ranarr weed 1 Rare 7,640
Grimy lantadyme 1 Rare 1,391
Other
Item Quantity Rarity GE market price
Coins 80–800 Common Not sold
Kebab 1–3 Common 41–123
Shark 1 Common 921
Adamantite bar 1 Common 1,904
Crossbow string 1 Common 179
Steel bar 2 Common 946
Magic logs 5 (noted) Common 5,450
Coal 15 (noted) Common 2,430
Runite bar 1 Rare 12,368
Clue scroll (hard) 1 Rare Not sold
Clue scroll (elite) 1 Rare (1/750) Not sold
Trivia
- In RuneScape 3, Smoke devils are familiars that require a Summoning level of 61 to use.
