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Mithril dragons are metal dragons found in the Ancient Cavern and the extended area of the Brimhaven Dungeon resource dungeon. To access the Ancient Cavern, the player needs to start the Pyre ship section of Firemaking in Barbarian Training. To access the extended area of the Brimhaven Dungeon resource dungeon, the player must wear the Daemonheim aura 4 from the elite set of the Daemonheim achievements. These dragons have extremely high defence, but, since they are made of metal, are relatively weak to magic, with earth spells being their primary weakness. Mithril dragons are often killed for their possible drops, which includes the dragon full helm, draconic visage, chewed bones and elite clue scroll.

Mithril dragons are an excellent source of charms, as they drop four of them at a time. They are also a good source of rune weaponry.

When they originally were released, they broke the King Black Dragon's record as the strongest dragon, though this has since changed.

Habitat

Creating dragon-mithril key

A mithril dragon forging a key

Mithril dragons can be found on the top level of the Ancient Cavern and in Brimhaven Dungeon resource dungeonDwarf multicannons are not allowed in the Ancient Cavern, and players must pay a small fee to enter the Brimhaven dungeon if they do not have completed the hard set of the Karamja achievements.

  1. Enter the cavern by jumping into the whirlpool near Otto's Grotto. Go down the stairs, run east past brutal green dragons, and climb up the stairs to the mithril dragons. Partial completion of Barbarian Training is required to use this entrance.
  2. Use fairy ring bjq to teleport inside the cavern. Run east past the waterfiends and the brutal green dragons, and climb up the stairs. Partial completion of Fairy Tale II - Cure a Queen and repairing the fairy ring with 5 bittercap mushrooms are required before the ring can be used.
  3. Use a ferocious ring or Slayer cape to teleport to Kuradal, run north, go down the stairs, run north-east past barbarian spirits and brutal green dragons, and climb up the stairs.

To use the ancient cavern, one must have completed the first part of barbarian firemaking training, and then talked to Otto about pyre ships. After the conversation is over, the player can now go in the whirlpool. Upon entering, one must climb down stairs and then run south to a set of stairs leading up to the mithril dragons. 

The whirlpool entrance is closer to the stairs and only involves running past brutal green dragons. However, its drawback is that players cannot have a familiar summoned when jumping into the whirlpool, which wastes an inventory space for the pouch. Many players therefore prefer using the fairy ring, a ferocious ring or their Slayer cape.

To access the ones in Brimhaven Dungeon resource dungeon, the player needs to wear the Daemonheim aura 4, obtained from the elite set of the Daemonheim achievements, the area is located on the other side of the cave, through a magical barrier. This area contains 4 dragons.

Strategies

Drops

100% drop

Item Quantity Rarity GE price
Dragon bonesDragon bones1Always1,735
Mithril barMithril bar3Always4,137

Charms

No charmGold charmGreen charmCrimson charmBlue charm
9%19–20%48–50%19–20%3–4%
Represents a 90% confidence range based on a sample of 11,237 kills.
4 charms are dropped at a time.
Add data to the log (requires JavaScript).

Main drop

Item Quantity Rarity GE price
Rune battleaxeRune battleaxe1Common23,455
Off-hand rune battleaxeOff-hand rune battleaxe1Common23,721
Rune dartRune dart14Common1,470
Rune javelinRune javelin8Common1,456
Rune maceRune mace1Uncommon7,333
Off-hand rune maceOff-hand rune mace1Uncommon7,454
Runite bolts 5Runite bolts10–27Uncommon9,490–25,623
Rune knifeRune knife8–18Uncommon11,424–25,704
Rune arrow 5Rune arrow8–42Uncommon1,216–6,384
Rune full helmRune full helm1Uncommon19,803
Rune spearRune spear1Uncommon11,283
Dragon full helmDragon full helm1Very rare[1]7,002,726
Super attack mix (2)Super attack mix (2)1Uncommon485
Super strength mix (2)Super strength mix (2)1Uncommon803
Super defence mix (2)Super defence mix (2)1Uncommon404
Prayer mix (2)Prayer mix (2)1Uncommon1,497
Coins 250Coins600–868Common600–868
Rune barRune bar1–2Uncommon13,627–27,254
Mithril barMithril bar(noted)Uncommon6,895
Ancient pageAncient page1UncommonNot sold
SharkShark[2]1Uncommon912
Chewed bonesChewed bones1RareNot sold
Rare drop tableRare drop table1RareNot sold

Tertiary drop

Item Quantity Rarity GE price
SharkShark1–6Uncommon912–5,472
Black dragon tail-boneMithril dragon tail-bone1Uncommon[3]Not sold
Sealed clue scroll (hard)Sealed clue scroll (hard)1UncommonNot sold
Sealed clue scroll (elite)Sealed clue scroll (elite)1Rare[4]Not sold
Starved ancient effigyStarved ancient effigy1Very rareNot sold
Draconic visageDraconic visage1Very rare[5]1,232,656
  1. ^ Drop rate: 1 in 32,768 - [1]
  2. ^ This is separate from the tertiary drop; it is possible to obtain 1 shark and nothing else.
  3. ^ Only during the Fur 'n' Seek wish list
  4. ^ There is a 1% chance of this being a sealed clue scroll (master) instead
  5. ^ Drop rate: 1 in 10,000 (source)

Rare drop table drops

This monster has access to the rare drop table.
Luck-enhancing items such as a ring of wealth or luck of the dwarves are not required to access the table.
Show/hide rare drop table
Item Quantity Rarity GE price
Coins 250Coins250–500Common250–500
Uncut sapphireUncut sapphire1Common683
Uncut emeraldUncut emerald1Common1,575
Uncut rubyUncut ruby1Common1,181
Uncut diamondUncut diamond1Common2,147
Uncut diamondUncut diamond45–55 (noted)Rare96,615–118,085
Loop half of a keyLoop half of a key1Common17,695
Tooth half of a keyTooth half of a key1Common19,243
Uncut dragonstoneUncut dragonstone1Uncommon10,932
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare491,940–601,260
Dragon longswordDragon longsword1Common58,024
Dragon spearDragon spear1Rare36,204
BattlestaffBattlestaff180–220 (noted)Rare1,094,760–1,338,040
Rune javelinRune javelin5Rare910
Rune platebodyRune platebody1Uncommon37,905
Rune platebodyRune platebody15–25 (noted)Rare568,575–947,625
Shield left halfShield left half1Rare64,688
Dragon helmDragon helm1Uncommon58,863
Rune arrowheads 5Rune arrowheads113–137Common22,035–26,715
Onyx bolts 5Onyx bolts135–165Very rare1,070,010–1,307,790
Chaos talismanChaos talisman1Rare1,526
Nature talismanNature talisman1Rare1,437
Water talismanWater talisman65–82 (noted)Rare473,915–597,862
Earth talismanEarth talisman65–82 (noted)Rare151,385–190,978
Fire talismanFire talisman25–35 (noted)Rare45,550–63,770
Raw lobsterRaw lobster135–165 (noted)Common20,925–25,575
Raw sharkRaw shark225–275 (noted)Uncommon231,300–282,700
Big bonesBig bones68–82 (noted)Uncommon16,592–20,008
Dragon bonesDragon bones180–220 (noted)Rare312,300–381,700
CoalCoal200–1,100 (noted)Uncommon26,800–147,400
Gold oreGold ore90–110 (noted)Common14,850–18,150
Adamantite oreAdamantite ore180–220 (noted)Uncommon261,720–319,880
Adamant barAdamant bar14–16 (noted)Common37,604–42,976
Adamant barAdamant bar135–165 (noted)Rare362,610–443,190
Runite oreRunite ore90–110 (noted)Rare1,052,640–1,286,560
Rune barRune bar(noted)Common40,881
Rune barRune bar45–55 (noted)Rare613,215–749,485
Grimy torstolGrimy torstol90–110 (noted)Uncommon286,200–349,800
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon88,650–108,350
Super restore (4)Super restore (4)45–55 (noted)Uncommon130,230–159,170
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon140,940–172,260
Lantadyme seed 5Lantadyme seed14–16Uncommon5,306–6,064
Dwarf weed seed 5Dwarf weed seed14–16Uncommon9,254–10,576
Magic seed 5Magic seed4Uncommon394,820
Palm tree seed 5Palm tree seed10Rare859,470
FlaxFlax450–550 (noted)Common18,900–23,100
Molten glassMolten glass45–55 (noted)Common8,820–10,780
Soft claySoft clay450–550 (noted)Uncommon216,000–264,000
Yew logsYew logs68–82 (noted)Uncommon10,336–12,464
Yew logsYew logs675–825 (noted)Rare102,600–125,400
Teak plankTeak plank45–55 (noted)Uncommon25,335–30,965
Mahogany plankMahogany plank270–330 (noted)Rare287,550–351,450
Blurberry SpecialBlurberry Special1Uncommon7,734
Vecna skullVecna skull1Very rare*241,411
Hazelmere's signet ringHazelmere's signet ring1Very rare*2,052,582,424
Brawling gloves (Melee)Brawling gloves (Melee)1Very rareNot sold
Brawling gloves (Magic)Brawling gloves (Magic)1Very rareNot sold
Brawling gloves (Ranged)Brawling gloves (Ranged)1Very rareNot sold
Brawling gloves (Agility)Brawling gloves (Agility)1Very rareNot sold
Brawling gloves (Cooking)Brawling gloves (Cooking)1Very rareNot sold
Brawling gloves (FM)Brawling gloves (FM)1Very rareNot sold
Brawling gloves (Fishing)Brawling gloves (Fishing)1Very rareNot sold
Brawling gloves (Hunter)Brawling gloves (Hunter)1Very rareNot sold
Brawling gloves (Mining)Brawling gloves (Mining)1Very rareNot sold
Brawling gloves (Prayer)Brawling gloves (Prayer)1Very rareNot sold
Brawling gloves (Smithing)Brawling gloves (Smithing)1Very rareNot sold
Brawling gloves (Thieving)Brawling gloves (Thieving)1Very rareNot sold
Brawling gloves (WC)Brawling gloves (WC)1Very rareNot sold
Crystal triskelion fragment 1Crystal triskelion fragment 11Very rareNot sold
Crystal triskelion fragment 2Crystal triskelion fragment 21Very rareNot sold
Crystal triskelion fragment 3Crystal triskelion fragment 31Very rareNot sold

Universal drops

Universal drops are dropped by nearly every monster outside of Daemonheim.
These drops are dropped alongside main drops.
Item Quantity Rarity GE price
Key tokenKey token1RareNot sold
Mimic kill tokenMimic kill token1Very rare10,059

Trivia

  • During the fusing of the dragonkin key, the mithril dragon temporarily appears as level 150.
  • In a Postbag from the hedge, Oziach pointed out that there are bronze dragons, iron dragons, steel dragons, and mithril dragons when he was chatting with Evil Dave. Oziach deduced that there will be adamant dragons, rune dragons, and even dragon dragons.
  • When killed, it says on the Adventurer's Log: "I killed [number] of mithril dragons." If the player killed 1, it would be "I killed a mithril dragon."
  • Their examine text indicates that metallic dragons, or at least mithril ones, may be the result of unnatural experimentation; of course, this may also refer to how they were created by the dragonkin. With the release of the quest One of a Kind, this has been confirmed.
  • Mithril dragons are the only metallic dragons that do not drop the dragon platelegs and plateskirt.