Brimstone key

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Brimstone key 5 detail.png

The Brimstone key is a key obtained from killing monsters while on a slayer assignment given by Konar quo Maten. It is used to open the brimstone chest.

The exact odds of receiving the key scales with the monster's Combat level. For level 100 or higher monsters, the odds are between 1/100 and 1/50, scaling linearly and capping at level 350 (-0.2 * lvl + 120).[1] For monsters lower than level 100, it follows a curve (0.2 * (lvl - 100) ^ 2 + 100).[2]

Visualization of brimstone key drop rate curve

Drop sources[edit | edit source]

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SourceLevelQuantityRarity
Aberrant spectre96 Multicombat.png11/103.2
Abhorrent spectre253 Multicombat.png11/69.4
Abyssal Sire350 Multicombat.png11/50
Abyssal demon124 Multicombat.png11/95.2
Adamant dragon338 Multicombat.png11/52.4
Ahrim the Blighted98 Multicombat.png11/100.8
Alchemical Hydra426 Multicombat.png11/50
Ancient Wyvern210 Multicombat.png11/78
Ancient Zygomite109 Multicombat.png11/98.2
Ankou75–98 Multicombat.png11/225
Aviansie69–148 Multicombat.png11/292.2
Baby dragon (black)83 Multicombat.png11/157.8
Baby dragon (blue)48 Multicombat.png11/640.8
Baby dragon (red)48 Multicombat.png11/641
Black demon172–292 Multicombat.png1Varies
Black dragon227; 247 Multicombat.png11/74.6
Bloodveld76; 81 Multicombat.png11/103.8
Blue dragon111 Multicombat.png11/97.8
Brine rat70 Multicombat.png11/280
Bronze dragon131; 143 Multicombat.png11/91.4
Brutal black dragon318 Multicombat.png11/56.4
Brutal blue dragon271 Multicombat.png11/65.8
Brutal red dragon289 Multicombat.png11/62.2
Callisto470 Multicombat.png11/50
Cave kraken127 Multicombat.png11/94.6
Cerberus318 Multicombat.png11/56.4
Chaos Elemental305 Multicombat.png11/59
Chaos Fanatic202 Multicombat.png11/79.6
Choke devil264 Multicombat.png11/64.2
Commander Zilyana596 Multicombat.png11/50
Crazy archaeologist204 Multicombat.png11/79.2
Dagannoth (Lighthouse)74; 92 Multicombat.png1Varies
Dagannoth (Waterbirth Island)88; 90 Multicombat.png1Varies
Dagannoth Prime303 Multicombat.png11/59.4
Dagannoth Rex303 Multicombat.png11/59.4
Dagannoth Supreme303 Multicombat.png11/59.4
Dagannoth fledgeling70 Multicombat.png11/280
Dagannoth spawn42 Multicombat.png11/772.8
Dark beast182 Multicombat.png11/83.6
Deviant spectre169 Multicombat.png11/86.2
Dharok the Wretched115 Multicombat.png11/97
Drake192 Multicombat.png11/81.6
Dust devil93; 110 Multicombat.png11/109.8
Fire giant86; 104; 109 Multicombat.png11/139.2
Flight Kilisa159 Multicombat.png11/91.4
Flockleader Geerin149 Multicombat.png11/91.4
Gargoyle111 Multicombat.png11/97.8
General Graardor624 Multicombat.png11/50
Giant Mole230 Multicombat.png11/74
Greater Nechryael200 Multicombat.png11/80
Greater abyssal demon342 Multicombat.png11/51.6
Greater demon92–113 Multicombat.png1Varies
Grotesque Guardians Multicombat.png11/54.5
Guthan the Infested115 Multicombat.png11/97
Hellhound122; 127; 136 Multicombat.png11/95.6
Hydra194 Multicombat.png11/81.2
Insatiable Bloodveld202 Multicombat.png11/79.6
Insatiable mutated Bloodveld278 Multicombat.png11/64.4
Iron dragon189; 215 Multicombat.png11/82.2
Jelly78 Multicombat.png11/196.8
K'ril Tsutsaroth650 Multicombat.png11/50
Kalphite Guardian141 Multicombat.png11/91.8
Kalphite Queen333 Multicombat.png11/53.4
Kalphite Soldier85 Multicombat.png11/145
Kalphite Worker28 Multicombat.png11/1,136.8
Karil the Tainted98 Multicombat.png11/100.8
King Black Dragon276 Multicombat.png11/64.8
King kurask295 Multicombat.png11/61
Kraken127; 291 Multicombat.png11/61.8
Kree'arra580 Multicombat.png11/50
Kurask106 Multicombat.png11/98.8
Lizardman53; 62 Multicombat.png11/461.8
Lizardman53; 62 Multicombat.png11/308.8
Lizardman brute73 Multicombat.png11/245.8
Lizardman shaman150 Multicombat.png11/90
Long-tailed Wyvern152 Multicombat.png11/89.6
Mithril dragon304 Multicombat.png11/59.2
Mountain troll69; 71 Multicombat.png11/269.2
Mutated Bloodveld123 Multicombat.png11/95.4
Nechryael115 Multicombat.png11/97
Nechryarch300 Multicombat.png11/60
Night beast374 Multicombat.png11/50
Nuclear smoke devil280 Multicombat.png11/64
Red dragon152 Multicombat.png11/89.6
Repugnant spectre335 Multicombat.png11/53
Rune dragon380 Multicombat.png11/50
Sarachnis318 Multicombat.png11/56.4
Scorpia225 Multicombat.png11/75
Skeletal Wyvern140 Multicombat.png11/92
Skotizo321 Multicombat.png11/55.8
Smoke devil160 Multicombat.png11/88
Spitting Wyvern139 Multicombat.png11/92.2
Steel dragon246; 274 Multicombat.png11/70.8
Taloned Wyvern147 Multicombat.png11/90.6
Thermonuclear smoke devil301 Multicombat.png11/59.8
Torag the Corrupted115 Multicombat.png11/97
Turoth83; 85; 87; 89 Multicombat.png11/124.2
Venenatis464 Multicombat.png11/50
Verac the Defiled115 Multicombat.png11/97
Vet'ion454 Multicombat.png11/50

Trivia[edit | edit source]

  • The symbol on the key is that of Yin and yang (“阴阳”/“陰陽”), which, in Chinese philosophy, are the two "primal" elements which create, shape, and influence everything in existence and have to be kept in balance. This references the philosophy of the Kahlith and their masters, the Tasakaal, which is to maintain the balance between life and death.

References[edit | edit source]

  1. Jagex. Mod Kieren's Twitter account. 16 January 2019. Mod Kieren: "It follows a curve up until level 100 then scales linearly between those 2 values upto level 350 combat. Creatures over thsi[sic] will cap at 1/50. [1]"
  2. Jagex. Mod Kieren's Twitter account. 16 January 2019. Mod Kieren: "0.2*(CBLEVEL - 100)^2 + 100"