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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 24


Item Quantity Rarity GE market price
Rune dagger Rune dagger 1 Common 4,605
Rune scimitar Rune scimitar 1 Common 16,726
Rune battleaxe Rune battleaxe 1 Common 27,040
Mystic air staff Mystic air staff 1 Uncommon 28,263
Mystic fire staff Mystic fire staff 1 Uncommon 28,444
Dragon scimitar Dragon scimitar 1 Rare 69,230
Smoke battlestaff Smoke battlestaff 1 Rare (1/512) 3,188,911
Ancient staff Ancient staff 1 Rare 79,364


Item Quantity Rarity GE market price
Red d'hide body Red d'hide body 1 Uncommon 6,572
Rune chainbody Rune chainbody 1 Uncommon 32,876
Occult necklace Occult necklace 1 Rare (1/350) 723,907
Dragon chainbody Dragon chainbody 1 Very rare (1/2,000) 1,105,484


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 10,740
Rune knife (p) Rune knife(p++) 50 Uncommon 81,200
Rune arrow 5 Rune arrow 100 Uncommon 11,500


Item Quantity Rarity GE market price
Herb seed 5 Snapdragon seed 2 Uncommon 51,370
Magic seed 5 Magic seed 1 Rare 118,815


Item Quantity Rarity GE market price
Pure essence Pure essence 300 (noted) Common 3,000
Desert goat horn Desert goat horn 50 (noted) Uncommon 3,000
Molten glass Molten glass 100 (noted) Uncommon 18,100
Mithril bar Mithril bar 20 (noted) Uncommon 19,360
Grimy toadflax Grimy toadflax 15 (noted) Uncommon 38,970
Coal Coal 150 (noted) Uncommon 27,150
Gold ore Gold ore 200 (noted) Uncommon 83,400
Onyx bolt tips 5 Onyx bolt tips 12 Uncommon 102,552
Grapes Grapes 100 (noted) Rare 21,000
Diamond Diamond 10 (noted) Rare 21,550
Magic logs Magic logs 20 (noted) Rare 21,340


Item Quantity Rarity GE market price
Ugthanki kebab Ugthanki kebab 3 Common 3,513
Tuna potato Tuna potato 3 Uncommon 5,433
Prayer potion (4) Prayer potion (4) 2 Uncommon 18,460
Sanfew serum (4) Sanfew serum (4) 2 Uncommon 34,510


Item Quantity Rarity GE market price
Coins 10000 Coins 10,000–19,996 Common Not sold
Tinderbox Tinderbox 1 Common 128
Bullseye lantern (unlit) Bullseye lantern (unlit) 1 Uncommon 1,381
Fire talisman Fire talisman 1 Uncommon 1,491
Dragonstone ring Dragonstone ring 1 Rare 20,659
Crystal key Crystal key 1 Rare (1/128) 31,084
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 1,574
Loop half of key Loop half of key 1 Common 6,807
Tooth half of key Tooth half of key 1 Common 23,426
Uncut emerald Uncut emerald 1 Uncommon 1,517
Uncut ruby Uncut ruby 1 Uncommon 2,316
Nature talisman Nature talisman 1 Uncommon 565
Chaos talisman Chaos talisman 1 Uncommon 275
Nature rune Nature rune 67 Uncommon 18,224
Runite bar Runite bar 1 Uncommon 13,770
Rune spear Rune spear 1 Rare 12,964
Rune battleaxe Rune battleaxe 1 Rare 27,040
Rune 2h sword Rune 2h sword 1 Rare 41,222
Uncut diamond Uncut diamond 1 Rare 3,965
Rune javelin Rune javelin 5 Rare 685
Silver ore Silver ore 100 (noted) Rare 8,000
Adamant javelin Adamant javelin 20 Rare 1,100
Rune sq shield Rune sq shield 1 Rare 25,054
Steel arrow 5 Steel arrow 150 Rare 5,100
Rune arrow 5 Rune arrow 42 Rare 4,830
Law rune Law rune 45 Rare 9,540
Death rune Death rune 45 Rare 13,410
Dragonstone Dragonstone 1 Rare 20,514
Rune kiteshield Rune kiteshield 1 Rare 36,232
Dragon med helm Dragon med helm 1 Rare 63,589
Shield left half Shield left half 1 Very rare 73,917
Dragon spear Dragon spear 1 Very rare 39,517

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