Thermonuclear smoke devil

Thermonuclear smoke devil
Released	10 April 2014 (Update)
Members	Yes
Combat level	301
Size	4x4
Examine	Woah.
League region	Kandarin✓
Combat info
XP bonus	+0%
Max hit	8
Aggressive	No
Poisonous	No
Attack style	Typeless Magical ranged
Attack speed	2 ticks (1.2 seconds)
Respawn time	15 ticks (9 seconds)
Slayer info
Slayer level	93
Slayer XP	240 xp
Category	Bosses, Smoke Devils
Assigned by	File:Konar chathead.png
Combat stats
Aggressive stats
Melee defence
Magic defence
+800	No elemental weakness
Ranged defence
Immunities
Poison	Immune
Venom	Immune
Cannons	Not immune
Thralls	Not immune
	Open in DPS calculator
Advanced data
Monster ID	499

This article has a strategy guide.

All information on mechanics and strategy will be on this page.

This article has a Slayer task guide here.

Information comparing locations for Slayer tasks will be on this page

The thermonuclear smoke devil, often referred to as thermy, is the boss version of the smoke devil, found in the Smoke Devil Dungeon. It requires a minimum of 93 Slayer to damage. Located at the Smoke Devil Dungeon south of Castle Wars, the Thermonuclear smoke devil can only be attacked on a smoke devil task, with the exception of one kill for the Western Provinces Diary (provided that the player has 93 Slayer without boosting).

It is the only monster to drop the smoke battlestaff, jar of smoke and the pet smoke devil. It drops the occult necklace at a higher rate than smoke devils do.

Unlike most NPCs, the Thermonuclear smoke devil is always able to walk through other monsters/players. This is to prevent players from safespotting the boss using the smoke devils found in its lair.

A dwarf multicannon cannot be used inside the boss room. If it is set up, the cannon will be destroyed (as in the lairs of the KBD and KQ).

Location

There are several ways to access the dungeon:

The fairy ring code BKP will bring the players just south-west of the dungeon.
Using a ring of dueling to teleport to Castle Wars, then running south-west.

Location

Levels

Members

Spawns

Map

League region

Smoke Devil Dungeon

301

1

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Monster	Thermonuclear smoke devil
Level(s)	301

X/Y: 2360,9452

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Kandarin✓

Money making

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Drops

Drop rates estimated based on 1,059,303 samples from the Drop Rate Project, unless otherwise cited.

100%

	Item	Quantity	Rarity	Price	High Alch
	Ashes	1	Always	91	1

Weapons and armour

Item	Quantity	Rarity	Price	High Alch
Rune dagger	1	5/107	4,382	4,800
Rune chainbody	1	4/107	29,547	30,000
Red d'hide body	1	3/107	6,123	6,738
Rune battleaxe	1	3/107	24,300	24,960
Mystic air staff	1	3/107	25,227	25,500
Mystic fire staff	1	3/107	25,116	25,500
Rune scimitar	1	2/107	14,940	15,360
Rune knife(p++)	50	1/107	10,850	4,950
Dragon scimitar	1	1/107	59,468	60,000
Ancient staff	1	1/107	70,563	60,000
Occult necklace	1	1/350^[1]	449,808	27,000
Smoke battlestaff	1	1/512^[1]	1,891,413	9,300
Dragon chainbody	1	1/2,000^[1]	178,106	150,000

Runes and ammunition

	Item	Quantity	Rarity	Price	High Alch
	Smoke rune	100	10/107	4,700	1,200
	Air rune	300	8/107	1,500	600
	Soul rune	60	8/107	10,380	10,800
Rune arrow.png: Thermonuclear smoke devil drops Rune arrow with rarity 2/107 in quantity 100	Rune arrow	100	2/107	5,600	24,000

Consumables

	Item	Quantity	Rarity	Price	High Alch
	Ugthanki kebab	3	1/107	2,301	36
	Tuna potato	3	3/107	4,527	201
Sanfew serum(4).png: Thermonuclear smoke devil drops Sanfew serum(4) with rarity 3/107 in quantity 2	Sanfew serum(4)	2	3/107	35,534	360
	Prayer potion(4)	2	1/107	20,122	228

Resources

Item	Quantity	Rarity	Price	High Alch
Pure essence	300 (noted)	2/107	300	600
Molten glass	100 (noted)	2/107	8,900	100
Mithril bar	20 (noted)	2/107	13,020	3,600
Coal	150 (noted)	2/107	22,800	4,050
Magic logs	20 (noted)	2/107	20,920	3,840
Gold ore	200 (noted)	2/107	31,400	18,000
Diamond	10 (noted)	1/107	17,630	12,000

Other

	Item	Quantity	Rarity	Price	High Alch
	Coins	10,000–20,000	15/107	10,000–20,000	10,000–20,000
	Tinderbox	1	1/107	94	0
	Fire talisman	1	1/107	3,810	2
	Bullseye lantern	1	1/107	1,421	252
	Desert goat horn	50 (noted)	2/107	2,050	350
	Grimy toadflax	15 (noted)	2/107	52,215	165
Onyx bolt tips.png: Thermonuclear smoke devil drops Onyx bolt tips with rarity 2/107 in quantity 12	Onyx bolt tips	12	2/107	104,724	7,200
Snapdragon seed.png: Thermonuclear smoke devil drops Snapdragon seed with rarity 2/107 in quantity 2	Snapdragon seed	2	2/107	83,318	72
	Grapes	100 (noted)	1/107	1,900	0
Magic seed.png: Thermonuclear smoke devil drops Magic seed with rarity 1/107 in quantity 1	Magic seed	1	1/107^[1]	97,288	253
	Dragonstone ring	1	1/107	11,850	10,575
	Crystal key	1	1/107^[2]	25,297	90

Gem drop table

There is a 2/107 chance of rolling the gem drop table.

Item	Quantity	Rarity	Price	High Alch
Nothing	N/A	1/107.2; Never^{[d 1]}	N/A	N/A
Uncut sapphire	1	1/214; 1/108.67^{[d 2]}	238	15
Uncut emerald	1	1/428; 1/217.34^{[d 2]}	463	30
Uncut ruby	1	1/856; 1/434.69^{[d 2]}	988	60
Nature talisman	1	1/2,282.67; 1/1,159.17^{[d 2]}	328	2
Uncut diamond	1	1/3,424; 1/1,738.75^{[d 2]}	2,142	120
Loop half of key	1	1/6,848; 1/3,477.5^{[d 2]}	11,919	60
Tooth half of key	1	1/6,848; 1/3,477.5^{[d 2]}	11,925	60
Rune javelin	5	1/6,848; 1/3,477.5^{[d 2]}	950	1,200
Rune spear	1	1/109,568; 1/6,520.31^{[d 2]}^{[d 3]}	11,871	12,480
Shield left half	1	1/219,136; 1/13,040.62^{[d 2]}^{[d 3]}	65,394	66,000
Dragon spear	1	1/292,181.33; 1/17,387.5^{[d 2]}^{[d 3]}	38,854	37,440

^ The "nothing" drop is removed while wearing a ring of wealth.
^ ^2.00 ^2.01 ^2.02 ^2.03 ^2.04 ^2.05 ^2.06 ^2.07 ^2.08 ^2.09 ^2.10 The drop rate is increased while wearing a ring of wealth due to the "nothing" drop being removed.
^ ^3.0 ^3.1 ^3.2 Only dropped if Legends' Quest has been finished; if not, a talisman is dropped instead.

Tertiary

	Item	Quantity	Rarity	Price	High Alch
Brimstone key.png: Thermonuclear smoke devil drops Brimstone key with rarity 1/48 in quantity 1	Brimstone key	1	1/48^{[d 1]}	Not sold	N/A
	Clue scroll (hard)	1	1/96^{[d 2]}^[3]	Not sold	12
	Clue scroll (elite)	1	1/500^{[d 3]}^[1]	Not sold	12
	Jar of smoke	1	1/2,000	83,747	1
	Pet smoke devil	1	1/3,000^[4]	Not sold	N/A

^ Brimstone keys are only dropped if killed on a Slayer task given by Konar quo Maten.
^ The hard clue scroll drop rate increases to 1/91 after unlocking the hard Combat Achievements rewards tier.
^ The elite clue scroll drop rate increases to 1/475 after unlocking the elite Combat Achievements rewards tier.

Combat Achievements

There are 0 Combat Achievement tasks (totalling 0 points) available for Thermonuclear Smoke Devil.

Name	Description	Type	Tier	Comp%

Changes

Date	Changes
[[{{#explode:17 March 2021\| \|0}} {{#explode:17 March 2021\| \|1}}]] [[{{#explode:17 March 2021\| \|2}}]] (update \| poll)	Added the Jar of Smoke to the tertiary drop table Reduced the chance of dropping Tinderboxes, Bullseye Lanterns, Pure Essence and Kebabs.
[[{{#explode:27 September 2018\| \|0}} {{#explode:27 September 2018\| \|1}}]] [[{{#explode:27 September 2018\| \|2}}]] (update \| poll)	The boss was given a graphical update to be more distinguishable from their regular variant.
[[{{#explode:25 June 2015\| \|0}} {{#explode:25 June 2015\| \|1}}]] [[{{#explode:25 June 2015\| \|2}}]] (update \| poll)	Added a 'peek' option to the entrance of this boss, allowing players to see the number of other players currently in the boss room.
[[{{#explode:19 March 2015\| \|0}} {{#explode:19 March 2015\| \|1}}]] [[{{#explode:19 March 2015\| \|2}}]] (update)	You can no longer kill Thermy without a slayer assignment if you haven't started the Western Achievement Diary.
[[{{#explode:17 July 2014\| \|0}} {{#explode:17 July 2014\| \|1}}]] [[{{#explode:17 July 2014\| \|2}}]] (update \| poll)	Players can now receive a pet version of this boss after defeating it.
[[{{#explode:22 May 2014\| \|0}} {{#explode:22 May 2014\| \|1}}]] [[{{#explode:22 May 2014\| \|2}}]] (update \| poll)	When Thermy drops a clue scroll, it now appears at the correct place on the ground. Thermy now has an 'Attack' option, rather than 'Fight'. Players can now permanently dismiss the warning that is shown before entering the Thermy boss room.

Gallery (historical)


10 April 2014 – 27 September 2018	27 September 2018 – present

Trivia

The thermonuclear smoke devil was graphically updated on 27 September 2018 as part of an update. Prior to the update, it was simply a larger version of the smoke devils scattered across the dungeon.
The thermonuclear smoke devil and the Kraken are the only slayer bosses that can be fought with another player.
Attempting to attack the thermonuclear smoke devil with a boosted Slayer level of at least 93 will yield the message: Although Brieve will allow you to kill this boss off-task for the Achievement Diary, the level 93 requirement still applies. Stat-boosts are not accepted.
Players can transform into a Thermy snowman by using a snowman ring, which resembles the thermonuclear smoke devil.
The thermonuclear smoke devil has an eye and not a mouth, as confirmed in a Postbag from the Hedge letter ^[5]
If the thermonuclear smoke devil is your most-killed boss, the Combat Achievements summary page will list it as "Thermy".

References

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 Envision. "Drop Rates V2." 29 July 2014. Old School RuneScape Forums.
^ Jagex. Mod Ash's Twitter account. 9 March 2016. Archived from the original on 25 March 2019. Mod Ash: "1/128. I hope you got some other decent stuff while that was going on."
^ Jagex. The Kebos Lowlands. 10 January 2019. Archived from the original on 15 March 2019.
^ Jagex. Mod JohnC's Twitter account. 15 September 2014. Archived from the original on 15 September 2014. Mod JohnC: "Kraken, Thermy & Penance Queen pet drop rates - DKS for the final reveal next week!"
^ "Gielinor Gazette - May 2022". RuneScape News. Jagex. 31 May 2022. Archived from the original.

[3] The "nothing" drop is removed while wearing a ring of wealth.

[row-4] 2.00 ^2.01 ^2.02 ^2.03 ^2.04 ^2.05 ^2.06 ^2.07 ^2.08 ^2.09 ^2.10 The drop rate is increased while wearing a ring of wealth due to the "nothing" drop being removed.

[rowm-5] 3.0 ^3.1 ^3.2 Only dropped if Legends' Quest has been finished; if not, a talisman is dropped instead.

[6] Brimstone keys are only dropped if killed on a Slayer task given by Konar quo Maten.

[8] The hard clue scroll drop rate increases to 1/91 after unlocking the hard Combat Achievements rewards tier.

[9] The elite clue scroll drop rate increases to 1/475 after unlocking the elite Combat Achievements rewards tier.

[DV2-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 Envision. "Drop Rates V2." 29 July 2014. Old School RuneScape Forums.

[2] Jagex. Mod Ash's Twitter account. 9 March 2016. Archived from the original on 25 March 2019. Mod Ash: "1/128. I hope you got some other decent stuff while that was going on."

[7] Jagex. The Kebos Lowlands. 10 January 2019. Archived from the original on 15 March 2019.

[Confirmed_droprates-10] Jagex. Mod JohnC's Twitter account. 15 September 2014. Archived from the original on 15 September 2014. Mod JohnC: "Kraken, Thermy & Penance Queen pet drop rates - DKS for the final reveal next week!"

[11] "Gielinor Gazette - May 2022". RuneScape News. Jagex. 31 May 2022. Archived from the original.

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Thermonuclear smoke devil

Contents

Location

Money making

Drops