Mithril Dragons are the third-strongest metal Dragons in OSRS. They are generally considered a good slayer task as they are quick and profitable. However, the main downside to Mithril Dragons' slayer tasks is that they are tough to kill and require high combat stats to kill efficiently.
Mithril Dragons can be found on the top level of the Ancient Cavern. To access this area, the player must have completed the first part of the Barbarian firemaking training and talked to Otto about Pyre ships.
Here are the fastest ways to get to the Ancient Cavern:
When inside the cavern, climb up the stairs south to find the Mithril Dragons.
Head slot: Slayer helm (i)
Neck slot: Amulet of torture
Cape slot: Fire cape
Body slot: Bandos chestplate
Leg slot: Bandos tassets
Weapon slot: Dragon hunter lance
Ammo slot: Rada’s blessing 4
Shield slot: Dragonfire shield (charged)
Glove slot: Barrows gloves
Boot slot: Dragon boots
Ring slot: Berserker ring (i)
Head slot: Slayer helm (i)
Neck slot: Necklace of anguish
Cape slot: Ava’s assembler
Body slot: Karil’s leathertop
Leg slot: Karil’s leatherskirt
Weapon slot: Dragon hunter crossbow
Ammo slot: Diamond dragon bolts (e)
Shield slot: Anti-dragon shield
Glove slot: Barrows gloves
Boot slot: Saradomin d’hide boot
Ring slot: Archers ring(i)
Head slot: Slayer helm (i)
Neck slot: Occult necklace
Cape slot: Imbued god cape
Body slot: Ancestral robe top
Leg slot: Ancestral robe bottom
Weapon slot: Tumeken’s shadow
Ammo slot: Rada’s blessing 4
Glove slot: Tormented bracelet
Boot slot: Eternal boots
Ring slot: Seers ring (i)
Mithril Dragons have a combat level of 304 and can attack with melee, ranged, magic, and Dragonfire.
Since Mithril Dragons use all 3 combat styles, players have to tank the hits from 2 other combat styles while using protection prayer against one. To minimize damage from the Mithril Dragon, players should prioritize protecting against the attack style they are weakest to, based on the defensive bonuses of their gear.
Mithril Dragons are weak to stab and Dragon Hunter weapons. However, magic is the most effective attack style for killing them. While maging them, players should stand at a distance and use Protect from Missiles, since Mithril Dragon’s ranged attacks have a higher max hit than its mage attacks. Players should also wear gear that maximizes their magic damage and accuracy bonus.
Using ranged is similar to magic. Players should turn on protect from missiles and equip high magic defence bonus equipment while keeping their distance from the Mithril Dragon. Players are recommended to use a Dragon Hunter crossbow, as they are a lot more effective against Mithril Dragons than other Crossbows. Rigour or Eagle Eye should also be used to improve kills.
Using melee against Mithril Dragons is quite effective and cheap only if the player has high combat stats (90+) and uses Osmumten’s fang or a Dragon Hunter Lance. It’s best to use Protect from Magic and wear Torva or Bandos armour due to their high strength and defence bonuses. Players who can’t use any of those can opt for Karil’s or Black Dragonhide armour and use Protect from Melee. Piety should also be used to improve kills.
With the recommended stats above, players can kill the Mithril Dragons 45 times per hour when wielding the Osmumten’s fang and using piety. This results in a 780K GP per hour profit after the costs of prayer potions, extended antifire potions, and food have been deducted.
The average Mithril Dragon kill is worth 22K GP, including the average value of chewed bones.
100% Drops
Dragon bones 1 (Always), Mithril bar 3 (Always).
Weapons and Armour
Rune battleaxe 1 (1/16), Rune dart(p) 10 (1/18.29), Rune battleaxe 1 (1/42.67), Rune knife 10 (1/42.67), Rune mace 1 (1/42.67), Rune spear 1 (1/64), Rune full helm 1 (1/128), Dragon full helm 1 (1/32,768).
Runes and Ammunition
Blood rune 27 (1/6.73), Rune javelin 9 (1/143), Runite bolts 10–21 (1/213.33), Soul rune 12 (1/426.7), Rune arrow 8 (1/426.7).
Consumables
Shark 1 (1/21.33), Prayer mix(2) 1 (1/64), Super attack mix(2) 1 (1/64), Super restore mix(2) 1 (1/64), Super set mix(2) 1 (1/64).
Other
Coins 600 (1/7.52), Coins 676 (1/18.29), Dragon javelin heads 15 (1/128), Chewed bones 1 (1/128), Runite bar 1 (1/42.67), Ancient page 1 (1/64).
Rare and Gem Drop Table
Nothing (1/58.78), Uncut sapphire 1 (1/128), Uncut emerald 1 (1/64), Uncut ruby 1 (1/64), Loop half of key 1 (1/768), Tooth half of key 1 (1/768), Coins 3,000 (1/128), Nature talisman 1 (1/1,792), Uncut diamond 1 (1/1,792), Runite bar 1 (1/1,792), Rune javelin 5 (1/192), Nature rune 15 (1/192), Rune 2h sword 1 (1/1,661), Rune battleaxe 1 (1/1,661), Law rune 45 (1/128), Death rune 45 (1/128), Steel arrow 150 (1/128), Rune arrow 12 (1/128), Adamant javelin 5 (1/128), Rune sq shield 1 (1/1,661), Silver ore (noted) 100 (1/1,661), Rune spear 1 (1/1,665), Rune kiteshield 1 (1/16,384), Rune med helm 1 (1/16,384), Shield left half 1 (1/27,367), Dragon spear 1 (1/32,768).
Tertiary
Brimstone key 1 (1/50), Elite clue scroll 1 (1/350), Draconic visage 1 (1/10,000).