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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 bones1Always1,659
Mithril barMithril bar3Always3,744

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 battleaxe1Common23,750
Off-hand rune battleaxeOff-hand rune battleaxe1Common23,816
Rune dartRune dart14Common1,554
Rune javelinRune javelin8Common1,472
Rune maceRune mace1Uncommon7,314
Off-hand rune maceOff-hand rune mace1Uncommon7,380
Runite bolts 5Runite bolts10–27Uncommon9,490–25,623
Rune knifeRune knife8–18Uncommon11,944–26,874
Rune arrow 5Rune arrow8–42Uncommon1,192–6,258
Rune full helmRune full helm1Uncommon19,817
Rune spearRune spear1Uncommon10,940
Dragon full helmDragon full helm1Very rare[1]7,508,925
Super attack mix (2)Super attack mix (2)1Uncommon460
Super strength mix (2)Super strength mix (2)1Uncommon794
Super defence mix (2)Super defence mix (2)1Uncommon421
Prayer mix (2)Prayer mix (2)1Uncommon1,414
Coins 250Coins600–868Common600–868
Rune barRune bar1–2Uncommon13,812–27,624
Mithril barMithril bar(noted)Uncommon6,240
Ancient pageAncient page1UncommonNot sold
SharkShark[2]1Uncommon799
Chewed bonesChewed bones1RareNot sold
Rare drop tableRare drop table1RareNot sold

Tertiary drop

Item Quantity Rarity GE price
SharkShark1–6Uncommon799–4,794
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]1,250,451
  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 sapphire1Common420
Uncut emeraldUncut emerald1Common1,144
Uncut rubyUncut ruby1Common1,073
Uncut diamondUncut diamond1Common2,188
Uncut diamondUncut diamond45–55 (noted)Rare98,460–120,340
Loop half of a keyLoop half of a key1Common16,697
Tooth half of a keyTooth half of a key1Common18,258
Uncut dragonstoneUncut dragonstone1Uncommon11,032
Uncut dragonstoneUncut dragonstone45–55 (noted)Rare496,440–606,760
Dragon longswordDragon longsword1Common58,234
Dragon spearDragon spear1Rare36,245
BattlestaffBattlestaff180–220 (noted)Rare1,115,460–1,363,340
Rune javelinRune javelin5Rare920
Rune platebodyRune platebody1Uncommon37,576
Rune platebodyRune platebody15–25 (noted)Rare563,640–939,400
Shield left halfShield left half1Rare64,613
Dragon helmDragon helm1Uncommon58,840
Rune arrowheads 5Rune arrowheads113–137Common18,871–22,879
Onyx bolts 5Onyx bolts135–165Very rare1,077,300–1,316,700
Chaos talismanChaos talisman1Rare1,099
Nature talismanNature talisman1Rare787
Water talismanWater talisman65–82 (noted)Rare514,150–648,620
Earth talismanEarth talisman65–82 (noted)Rare136,370–172,036
Fire talismanFire talisman25–35 (noted)Rare51,125–71,575
Raw lobsterRaw lobster135–165 (noted)Common21,195–25,905
Raw sharkRaw shark225–275 (noted)Uncommon226,350–276,650
Big bonesBig bones68–82 (noted)Uncommon13,056–15,744
Dragon bonesDragon bones180–220 (noted)Rare298,620–364,980
CoalCoal200–1,100 (noted)Uncommon26,200–144,100
Gold oreGold ore90–110 (noted)Common14,400–17,600
Adamantite oreAdamantite ore180–220 (noted)Uncommon283,320–346,280
Adamant barAdamant bar14–16 (noted)Common39,186–44,784
Adamant barAdamant bar135–165 (noted)Rare377,865–461,835
Runite oreRunite ore90–110 (noted)Rare1,100,880–1,345,520
Rune barRune bar(noted)Common41,436
Rune barRune bar45–55 (noted)Rare621,540–759,660
Grimy torstolGrimy torstol90–110 (noted)Uncommon284,940–348,260
Grimy snapdragonGrimy snapdragon90–110 (noted)Uncommon77,490–94,710
Super restore (4)Super restore (4)45–55 (noted)Uncommon136,935–167,365
Prayer potion (4)Prayer potion (4)45–55 (noted)Uncommon126,180–154,220
Lantadyme seed 5Lantadyme seed14–16Uncommon2,674–3,056
Dwarf weed seed 5Dwarf weed seed14–16Uncommon4,998–5,712
Magic seed 5Magic seed4Uncommon287,672
Palm tree seed 5Palm tree seed10Rare704,980
FlaxFlax450–550 (noted)Common24,300–29,700
Molten glassMolten glass45–55 (noted)Common4,770–5,830
Soft claySoft clay450–550 (noted)Uncommon175,950–215,050
Yew logsYew logs68–82 (noted)Uncommon8,976–10,824
Yew logsYew logs675–825 (noted)Rare89,100–108,900
Teak plankTeak plank45–55 (noted)Uncommon16,065–19,635
Mahogany plankMahogany plank270–330 (noted)Rare233,820–285,780
Blurberry SpecialBlurberry Special1Uncommon8,440
Vecna skullVecna skull1Very rare*200,479
Hazelmere's signet ringHazelmere's signet ring1Very rare*2,138,409,151
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 rare8,514

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.