Thermonuclear smoke devil

Thermonuclear smoke devil
Released	10 April 2014 (Update)
Members	Yes
Combat level	301
Size	4x4
Examine	Woah.
Combat info
Max hit	8
Aggressive	No
Poisonous	No
Attack style	Typeless Magical ranged
Attack speed
Respawn time	15 ticks (9 seconds)
Slayer info
Slayer level	93
Slayer XP	240 xp
Category	Bosses, Smoke Devils
Assigned by
Combat stats
Aggressive stats
Defensive stats
Immunities
Poison	Immune
Venom	Immune
Cannons	Not immune
Thralls	Not immune
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 money making guide: Killing the Thermonuclear smoke devil.

Please add tips to the subpage, rather than the article below.

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[edit | edit source]

Location	Levels	Members	Spawns	Map
Smoke Devil Dungeon	301		1	Maplink

Drops[edit | edit source]

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

The average Thermonuclear smoke devil kill is worth 22,560.62.

The average Thermonuclear smoke devil kill while on a Konar task is worth 24,657.81.

100%[edit | edit source]

	Item	Quantity	Rarity	Price	High Alch
	Ashes	1	Always	58	1

Weapons and armour[edit | edit source]

Item	Quantity	Rarity	Price	High Alch
Rune dagger	1	5/107	4,428	4,800
Rune chainbody	1	4/107	29,429	30,000
Red d'hide body	1	3/107	6,128	6,738
Rune battleaxe	1	3/107	24,615	24,960
Mystic air staff	1	3/107	25,137	25,500
Mystic fire staff	1	3/107	25,262	25,500
Rune scimitar	1	2/107	15,103	15,360
Rune knife(p++)	50	1/107	16,250	4,950
Dragon scimitar	1	1/107	59,783	60,000
Ancient staff	1	1/107	72,592	60,000
Occult necklace	1	1/350^[1]	576,477	27,000
Smoke battlestaff	1	1/512^[1]	1,699,641	9,300
Dragon chainbody	1	1/2,000^[1]	153,050	150,000

Runes and ammunition[edit | edit source]

Item	Quantity	Rarity	Price	High Alch
Smoke rune	100	10/107	9,600	1,200
Air rune	300	8/107	1,500	600
Soul rune	60	8/107	11,520	10,800
Rune arrow	100	2/107	7,200	24,000

Consumables[edit | edit source]

Item	Quantity	Rarity	Price	High Alch
Ugthanki kebab	3	1/107	1,752	36
Tuna potato	3	3/107	3,486	201
Sanfew serum(4)	2	3/107	69,820	360
Prayer potion(4)	2	1/107	18,400	228

Resources[edit | edit source]

Item	Quantity	Rarity	Price	High Alch
Pure essence	300 (noted)	2/107	600	600
Molten glass	100 (noted)	2/107	10,200	100
Mithril bar	20 (noted)	2/107	14,480	3,600
Coal	150 (noted)	2/107	25,650	4,050
Magic logs	20 (noted)	2/107	21,520	3,840
Gold ore	200 (noted)	2/107	54,000	18,000
Diamond	10 (noted)	1/107	18,130	12,000

Other[edit | edit source]

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	54	0
Fire talisman	1	1/107	2,567	2
Bullseye lantern	1	1/107	893	252
Desert goat horn	50 (noted)	2/107	1,950	350
Grimy toadflax	15 (noted)	2/107	41,340	165
Onyx bolt tips	12	2/107	98,196	7,200
Snapdragon seed	2	2/107	93,508	72
Grapes	100 (noted)	1/107	2,400	0
Magic seed	1	1/107^[1]	80,650	253
Dragonstone ring	1	1/107	11,793	10,575
Crystal key	1	1/107^[2]	22,549	90

Gem drop table[edit | edit source]

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]}	265	15
Uncut emerald	1	1/428; 1/217.34^{[d 2]}	496	30
Uncut ruby	1	1/856; 1/434.69^{[d 2]}	1,148	60
Nature talisman	1	1/2,282.67; 1/1,159.17^{[d 2]}	219	2
Uncut diamond	1	1/3,424; 1/1,738.75^{[d 2]}	3,033	120
Loop half of key	1	1/6,848; 1/3,477.5^{[d 2]}	11,481	60
Tooth half of key	1	1/6,848; 1/3,477.5^{[d 2]}	9,574	60
Rune javelin	5	1/6,848; 1/3,477.5^{[d 2]}	790	1,200
Rune spear	1	1/109,568; 1/6,520.31^{[d 2]}^{[d 3]}	11,950	12,480
Shield left half	1	1/219,136; 1/13,040.62^{[d 2]}^{[d 3]}	66,067	66,000
Dragon spear	1	1/292,181.33; 1/17,387.5^{[d 2]}^{[d 3]}	37,153	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[edit | edit source]

Item	Quantity	Rarity	Price	High Alch
Brimstone key	1	1/47^{[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	26,564	0
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 with the completion of the hard combat achievements.
^ The elite clue scroll drop rate increases to 1/475 with the completion of the elite combat achievements.

Combat Achievements[edit | edit source]

Name	Description	Type	Tier
Hazard Prevention	Kill the Thermonuclear Smoke Devil without it hitting anyone.	Perfection	Elite
Spec'd Out	Kill the Thermonuclear Smoke Devil using only special attacks.	Restriction	Elite
Thermonuclear Veteran	Kill the Thermonuclear Smoke Devil 20 times.	Kill Count	Elite

Changes[edit | edit source]

Date	Changes
17 March 2021 (update \| poll)	Added the Jar of Smoke to the tertiary drop table Reduced the chance of dropping Tinderboxes, Bullseye Lanterns, Pure Essence and Kebabs.
25 June 2015 (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.
19 March 2015 (update)	You can no longer kill Thermy without a slayer assignment if you haven't started the Western Achievement Diary.
17 July 2014 (update \| poll)	Players can now receive a pet version of this boss after defeating it.
22 May 2014 (update)	When Thermy drops a clue scroll, it now appears at the correct place on the ground. Thermy and the Cave kraken boss now have 'Attack' options, rather than 'Fight'.

Trivia[edit | edit source]

A player transformed into a Thermy snowman.

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.
Despite the magic defence bonus of +800, at level one the effective defence against magical attacks is equal to 13.5 magic levels due to the way magic defence rolls are calculated.
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.

References[edit | edit source]

^ ^1.0 ^1.1 ^1.2 ^1.3 ^1.4 Envision. "Drop Rates V2." 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 Jan 2019. (Archived from the original on 15 Mar 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!"

[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 with the completion of the hard combat achievements.

[9] The elite clue scroll drop rate increases to 1/475 with the completion of the elite combat achievements.

[DV2-1] 1.0 ^1.1 ^1.2 ^1.3 ^1.4 Envision. "Drop Rates V2." 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 Jan 2019. (Archived from the original on 15 Mar 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!"

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Thermonuclear smoke devil

Contents

Location[edit | edit source]