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Thermonuclear smoke devil

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This article is about the boss. For the Slayer monster, see Smoke devil.
Invasion plans
This article has a strategy guide here.
All information on mechanics and strategy will be on this page.
Thermonuclear smoke devil
Thermonuclear smoke devil
Release date 10 April 2014 (Update)
Members? Yes
Combat level 301
Always drops Ashes
Combat info
Hitpoints 240
Aggressive No
Poisonous No
Max hit 8
Weakness Slash
Attack Styles
Magical ranged
Slayer-icon Slayer info
Slayer level 93
Slayer XP 240
Category Smoke devil
Assigned by
Nieve chatheadDuradel chathead
Combat-icon Combat stats
Attack-icon Strength-icon Defence-icon Ranged-icon Magic-icon
230 220 360 310 1
Attack-icon Aggressive stats
White dagger White scimitar White warhammer Magic-icon Ranged-icon
+0 +0 +0 +0 +0
Defence-icon Defensive stats
White dagger White scimitar White warhammer Magic-icon Ranged-icon
+11 +4 +9 +800 +900
Other bonuses Immunities
Strength-icon RangedStrength-icon Attack-icon Poison hitsplat Venom hitsplat
+0 +0 +0 Immune Immune
Attack speed
Monster attack speed 8

The Thermonuclear smoke devil (also called Thermy for short) is the boss version of the Smoke devil. These require a minimum of 93 Slayer to kill. Located at the Stronghold Slayer Cave, the thermonuclear smoke devil can only be attacked on a smoke devil task. The only exception to this is the Western Provinces diary, where one must be killed to complete a task.

This monster is the only monster to drop the Smoke battlestaff and the pet smoke devil. Their non-boss variants, however, also drop the Occult necklace.

Unlike most monsters in the Stronghold Slayer Cave, a dwarf multicannon cannot be used inside the boss room. If attempted, the cannon will be destroyed (similar to areas like at KBD or KQ).


100% dropsEdit

Item Quantity Rarity GE market price
Ashes Ashes 1 Always 23


Item Quantity Rarity GE market price
Rune dagger Rune dagger 1 Common 4,616
Rune scimitar Rune scimitar 1 Common 16,266
Rune battleaxe Rune battleaxe 1 Common 25,960
Mystic air staff Mystic air staff 1 Uncommon 27,549
Mystic fire staff Mystic fire staff 1 Uncommon 28,052
Dragon scimitar Dragon scimitar 1 Rare 67,230
Smoke battlestaff Smoke battlestaff 1 Rare (1/512) 2,546,930
Ancient staff Ancient staff 1 Rare 77,197


Item Quantity Rarity GE market price
Red d'hide body Red d'hide body 1 Uncommon 6,540
Rune chainbody Rune chainbody 1 Uncommon 31,512
Occult necklace Occult necklace 1 Rare (1/350) 687,803
Dragon chainbody Dragon chainbody 1 Very rare (1/2,000) 1,035,171


Item Quantity Rarity GE market price
Smoke rune Smoke rune 100 Common 1,300
Air rune Air rune 300 Common 1,500
Soul rune Soul rune 60 Common 9,180
Rune knife (p) Rune knife(p++) 50 Uncommon 74,150
Rune arrow 5 Rune arrow 100 Uncommon 12,500


Item Quantity Rarity GE market price
Herb seed 5 Snapdragon seed 2 Uncommon 53,410
Magic seed 5 Magic seed 1 Rare 121,506


Item Quantity Rarity GE market price
Pure essence Pure essence 300 (noted) Common 2,700
Desert goat horn Desert goat horn 50 (noted) Uncommon 2,800
Molten glass Molten glass 100 (noted) Uncommon 18,600
Mithril bar Mithril bar 20 (noted) Uncommon 19,480
Grimy toadflax Grimy toadflax 15 (noted) Uncommon 50,910
Coal Coal 150 (noted) Uncommon 25,350
Gold ore Gold ore 200 (noted) Uncommon 84,000
Onyx bolt tips 5 Onyx bolt tips 12 Uncommon 103,032
Grapes Grapes 100 (noted) Rare 20,400
Diamond Diamond 10 (noted) Rare 28,820
Magic logs Magic logs 20 (noted) Rare 21,860


Item Quantity Rarity GE market price
Ugthanki kebab Ugthanki kebab 3 Common 3,630
Tuna potato Tuna potato 3 Uncommon 5,295
Prayer potion (4) Prayer potion (4) 2 Uncommon 18,722
Sanfew serum (4) Sanfew serum (4) 2 Uncommon 33,978


Item Quantity Rarity GE market price
Coins 10000 Coins 10,000–19,996 Common Not sold
Tinderbox Tinderbox 1 Common 135
Bullseye lantern (unlit) Bullseye lantern (unlit) 1 Uncommon 1,488
Fire talisman Fire talisman 1 Uncommon 1,877
Dragonstone ring Dragonstone ring 1 Rare 19,569
Crystal key Crystal key 1 Rare (1/128) 30,804
Clue scroll (elite) Clue scroll (elite) 1 Rare (1/500) Not sold
Pet smoke devil Pet smoke devil 1 Very rare (1/3,000) Not sold

Rare drop table

In addition to the drops above, this monster also has access to the rare drop table.

Show/hide rare drop table
Item Quantity Rarity GE market price
Coins 1000 Coins 3,000 Common Not sold
Uncut sapphire Uncut sapphire 1 Common 1,742
Loop half of key Loop half of key 1 Common 7,853
Tooth half of key Tooth half of key 1 Common 22,562
Uncut emerald Uncut emerald 1 Uncommon 1,489
Uncut ruby Uncut ruby 1 Uncommon 2,149
Nature talisman Nature talisman 1 Uncommon 352
Chaos talisman Chaos talisman 1 Uncommon 170
Nature rune Nature rune 67 Uncommon 17,353
Runite bar Runite bar 1 Uncommon 13,536
Rune spear Rune spear 1 Rare 12,948
Rune battleaxe Rune battleaxe 1 Rare 25,960
Rune 2h sword Rune 2h sword 1 Rare 40,857
Uncut diamond Uncut diamond 1 Rare 4,617
Rune javelin Rune javelin 5 Rare 635
Silver ore Silver ore 100 (noted) Rare 18,000
Adamant javelin Adamant javelin 20 Rare 1,100
Rune sq shield Rune sq shield 1 Rare 23,947
Steel arrow 5 Steel arrow 150 Rare 5,100
Rune arrow 5 Rune arrow 42 Rare 5,250
Law rune Law rune 45 Rare 9,135
Death rune Death rune 45 Rare 11,520
Dragonstone Dragonstone 1 Rare 19,772
Rune kiteshield Rune kiteshield 1 Rare 35,273
Dragon med helm Dragon med helm 1 Rare 63,499
Shield left half Shield left half 1 Very rare 72,638
Dragon spear Dragon spear 1 Very rare 41,778

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