The Thermonuclear smoke devil, often referred to as Thermy, is the boss version of the Smoke devil, found in the Smoke Devil Dungeon. These require a minimum of 93 Slayer to kill. 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 and the pet smoke devil. Their non-boss variants, however, also drop the Occult necklace, albeit at a lower rate.
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).
Drops[]
Estimated drop rates are based off 2,000 kills.[1]
100% drops[]
Item Quantity Rarity GE market price Ashes 1 Always 72
Weapons[]
Item Quantity Rarity GE market price Rune dagger 1 Uncommon (~5/128) 4,391 Rune battleaxe 1 Uncommon (~3/128) 24,487 Mystic air staff 1 Uncommon (~3/128) 24,974 Mystic fire staff 1 Uncommon (~3/128) 25,159 Rune scimitar 1 Uncommon (~2/128) 14,969 Dragon scimitar 1 Rare (~1/128) 59,627 Ancient staff 1 Rare (1/129)[2] 81,482 Smoke battlestaff 1 Rare (1/512) 1,976,673
Armour[]
Item Quantity Rarity GE market price Red d'hide body 1 Uncommon (~3.5/128) 5,932 Rune chainbody 1 Uncommon (~3/128) 29,475 Occult necklace 1 Rare (1/350) 496,473 Dragon chainbody 1 Very rare (1/2,000) 375,127
Runes/Ammunition[]
Item Quantity Rarity GE market price Smoke rune 100 Common (~9/128) 7,100 Air rune 300 Common (~8/128) 1,500 Soul rune 60 Common (~7/128) 8,760 Rune arrow 100 Uncommon (~2/128) 7,000 Rune knife(p++) 50 Rare (~0.5/128) 15,450
Seeds[]
Item Quantity Rarity GE market price Snapdragon seed 2 Uncommon (~2/128) 109,102 Magic seed 1 Rare (~1/128) 118,931
Materials[]
Item Quantity Rarity GE market price Pure essence 300 (noted) Common (~5/128) 600 Desert goat horn 50 (noted) Uncommon (~2/128) 4,500 Molten glass 100 (noted) Uncommon (~2/128) 12,700 Mithril bar 20 (noted) Uncommon (~2/128) 13,240 Grimy toadflax 15 (noted) Uncommon (~2/128) 23,820 Coal 150 (noted) Uncommon (~2/128) 24,300 Onyx bolt tips 12 Uncommon (~2/128) 98,652 Magic logs 20 (noted) Uncommon (~2/128) 21,800 Gold ore 200 (noted) Uncommon (~2/128) 41,200 Grapes 100 (noted) Rare (~1/128) 7,300 Diamond 10 (noted) Rare (~1/128) 18,910
Consumables[]
Item Quantity Rarity GE market price Ugthanki kebab 3 Uncommon (~4.5/128) 2,442 Tuna potato 3 Uncommon (~3.5/128) 3,471 Sanfew serum(4) 2 Uncommon (~3/128) 61,788 Prayer potion(4) 2 Rare (~1/128) 20,112
Other[]
Item Quantity Rarity GE market price Coins 10,000–20,000 Common (~14/128) Not sold Tinderbox 1 Common (~9.5/128) 62 Bullseye lantern (unlit) 1 Uncommon (~4/128) 1,064 Fire talisman 1 Uncommon (~4/128) 4,924 Gem drop table 1 Uncommon (~3/128) Not sold Dragonstone ring 1 Uncommon (~1.5/128) 12,035 Crystal key 1 Rare (1/128)[3] 21,748
Tertiary drops[]
Item Quantity Rarity GE market price Clue scroll (elite) 1 Rare (1/500) Not sold Pet smoke devil 1 Very rare (1/3,000) Not sold
Gem drop table
In addition to the drops above, this monster approximately has a 3/128 chance to access the gem drop table.
Show/hide gem drop table Item Quantity Rarity GE market price Uncut sapphire 1 Rare
(1/170.67; 1/128)[G 1]455 Uncut emerald 1 Rare
(1/341.33; 1/256)[G 1]679 Uncut ruby 1 Rare
(1/682.67; 1/512)[G 1]1,249 Nature talisman 1 Very rare
(1/1,820.44; 1/1,365.33)[G 1]744 Uncut diamond 1 Very rare
(1/2,730.67; 1/2,048)[G 1]2,627 Rune javelin 5 Very rare
(1/5,461.33; 1/4,096)[G 1]875 Loop half of key 1 Very rare
(1/5,461.33; 1/4,096)[G 1]10,307 Tooth half of key 1 Very rare
(1/5,461.33; 1/4,096)[G 1]10,840 Rune spear 1 Very rare
(1/87,381.33; 1/7,680)[G 1]11,933 Shield left half 1 Very rare
(1/174,762.67; 1/15,360)[G 1]65,697 Dragon spear 1 Very rare
(1/233,016.89; 1/20,480)[G 1]37,226
Trivia[]
- The thermonuclear smoke devil was graphically updated on 27 September 2018 as part of a update. Prior to the update, it was simply a larger version of the smoke devils scattered across the dungeon.