Hydra

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This article is about the normal Slayer monster. For the boss variant, see Alchemical Hydra.
For other uses, see Hydra (disambiguation).
Hydra icon.png

Hydras are draconic creatures found in the lower level of the Karuulm Slayer Dungeon in Mount Karuulm, requiring level 95 Slayer to kill. They were created by an unnamed dragonkin as a project which is not based on any prior work done by his fellow kin.

Hydras are only assigned as a slayer task by Konar. There are two areas within the dungeon that contain hydras, one being exclusive to players on a hydra Slayer assignment. As both of these are located within the Karuulm Slayer Dungeon, players who have not completed the elite Kourend & Kebos Diary must wear boots of stone, boots of brimstone, or granite boots to protect themselves from the extreme heat of the dungeon floor, or else they will take rapid damage.

Killing a Hydra is a requirement for the elite Kourend & Kebos Diary. The Alchemical Hydra boss is task-only, but the standard Hydras found on the lower level of Mount Karuulm are not, so the achievement can be boosted using a Wild pie or other temporary skill boost.

Fighting[edit | edit source]

The poison splats launched by the Hydra.

Hydras start off with a random combat style at the start of the battle, switching after three attacks, regardless if they hit or not. If the hydra still persists after roughly 30 seconds into a fight, it will spit poison at three random tiles (one at the player's location, two elsewhere), dealing 4 poison damage every two ticks (or 1 to 2 damage if the player has poison immunity) when the player is standing on one. The initial splat has a 3x3 AoE.

Hydras can drop their eyes, fangs, and hearts, which are used to create the brimstone ring. Much like dark totem pieces, the body parts are dropped in order and additional body parts can be obtained once players have one of each part.

In addition, they can also drop their tail, which is combined with a dragonbone necklace and a bonecrusher to create the bonecrusher necklace.

Drops[edit | edit source]

Drop rates estimated based on 16,739 kills from the Old School RuneScape Wiki drop log project, unless otherwise cited.

100%[edit | edit source]

Item Quantity Rarity Price High Alch
Hydra bones.png: Hydra drops Hydra bones with rarity Always in quantity 1Hydra bones1Always6,86296

Pre-roll[edit | edit source]

Item Quantity Rarity Price High Alch
Hydra's eye.png: Hydra drops Hydra's eye with rarity 1/1,800.72 in quantity 1Hydra's eye11/1,800.72; 1/360.72[d 1][d 2][1]Not sold60,000
Hydra's heart.png: Hydra drops Hydra's heart with rarity 1/1,800.72 in quantity 1Hydra's heart11/1,800.72; 1/360.72[d 1][d 2][1]Not sold60,000
Hydra's fang.png: Hydra drops Hydra's fang with rarity 1/1,800.72 in quantity 1Hydra's fang11/1,800.72; 1/360.72[d 1][d 2][1]Not sold60,000
Hydra tail.png: Hydra drops Hydra tail with rarity 1/5,001 in quantity 1Hydra tail11/5,001; 1/1,001[d 1][1]88,82160,000
Dragon thrownaxe.png: Hydra drops Dragon thrownaxe with rarity 1/10,000 in quantity 200-400Dragon thrownaxe200–4001/10,000; 1/2,000[d 1][1]77,800-155,60090,000-180,000
Dragon knife.png: Hydra drops Dragon knife with rarity 1/10,001 in quantity 200-400Dragon knife200–4001/10,001; 1/2,001[d 1][1]853,000-1,706,00020,000-40,000
  1. 1.0 1.1 1.2 1.3 1.4 1.5 All pre-roll item drop rates increase while on a hydra slayer assignment.
  2. 2.0 2.1 2.2 The order players receive the items in are: Hydra's eye, Hydra's fang, and finally Hydra's heart.

Weapons and armour[edit | edit source]

Item Quantity Rarity Price High Alch
Black d'hide chaps.png: Hydra drops Black d'hide chaps with rarity 3/128 in quantity 1Black d'hide chaps13/1285,6283,732
Battlestaff.png: Hydra drops Battlestaff with rarity 2/128 in quantity 2-3 (noted)Battlestaff2–3 (noted)2/12815,616-23,4248,400-12,600
Fire battlestaff.png: Hydra drops Fire battlestaff with rarity 5/128 in quantity 1Fire battlestaff15/1288,9279,300
Water battlestaff.png: Hydra drops Water battlestaff with rarity 5/128 in quantity 1Water battlestaff15/1288,9049,300
Rune kiteshield.png: Hydra drops Rune kiteshield with rarity 3/128 in quantity 1Rune kiteshield13/12832,11532,640
Rune platebody.png: Hydra drops Rune platebody with rarity 1/128 in quantity 1Rune platebody11/12838,28039,000
Mystic robe bottom.png: Hydra drops Mystic robe bottom with rarity 1/128 in quantity 1Mystic robe bottom11/12848,04348,000
Dragon longsword.png: Hydra drops Dragon longsword with rarity 1/128 in quantity 1Dragon longsword11/12859,19960,000

Runes[edit | edit source]

Item Quantity Rarity Price High Alch
Blood rune.png: Hydra drops Blood rune with rarity 9/128 in quantity 15-45Blood rune15–459/1284,395-13,1853,600-10,800
Chaos rune.png: Hydra drops Chaos rune with rarity 9/128 in quantity 20-50Chaos rune20–509/1281,420-3,5501,080-2,700
Death rune.png: Hydra drops Death rune with rarity 9/128 in quantity 30-60Death rune30–609/1286,300-12,6003,240-6,480
Fire rune.png: Hydra drops Fire rune with rarity 9/128 in quantity 70-90Fire rune70–909/128350-450140-180
Law rune.png: Hydra drops Law rune with rarity 9/128 in quantity 30-60Law rune30–609/1284,890-9,7804,320-8,640
Water rune.png: Hydra drops Water rune with rarity 9/128 in quantity 70-90Water rune70–909/128350-450140-180

Herbs[edit | edit source]

There is a 4/128 chance of rolling the herb drop table. There is a 2/128 chance to hit the noted herb drop table.

Item Quantity Rarity Price High Alch
Grimy guam leaf.png: Hydra drops Grimy guam leaf with rarity 1/128 in quantity 1-3Grimy guam leaf1–31/12811-337-21
Grimy marrentill.png: Hydra drops Grimy marrentill with rarity 1/170.7 in quantity 1-3Grimy marrentill1–31/170.717-518-24
Grimy tarromin.png: Hydra drops Grimy tarromin with rarity 1/227.6 in quantity 1-3Grimy tarromin1–31/227.6160-4809-27
Grimy harralander.png: Hydra drops Grimy harralander with rarity 1/292.6 in quantity 1-3Grimy harralander1–31/292.6632-1,8969-27
Grimy ranarr weed.png: Hydra drops Grimy ranarr weed with rarity 1/372.4 in quantity 1-3Grimy ranarr weed1–31/372.47,889-23,66718-54
Grimy irit leaf.png: Hydra drops Grimy irit leaf with rarity 1/512 in quantity 1-3Grimy irit leaf1–31/512886-2,65810-30
Grimy avantoe.png: Hydra drops Grimy avantoe with rarity 1/682.7 in quantity 1-3Grimy avantoe1–31/682.71,838-5,51410-30
Grimy kwuarm.png: Hydra drops Grimy kwuarm with rarity 1/819.2 in quantity 1-3Grimy kwuarm1–31/819.21,242-3,72612-36
Grimy cadantine.png: Hydra drops Grimy cadantine with rarity 1/1,024 in quantity 1-3Grimy cadantine1–31/1,0241,579-4,73713-39
Grimy lantadyme.png: Hydra drops Grimy lantadyme with rarity 1/1,365.3 in quantity 1-3Grimy lantadyme1–31/1,365.31,595-4,78513-39
Grimy dwarf weed.png: Hydra drops Grimy dwarf weed with rarity 1/1,365.3 in quantity 1-3Grimy dwarf weed1–31/1,365.3587-1,76114-42
Grimy avantoe.png: Hydra drops Grimy avantoe with rarity 1/192 in quantity 3 (noted)Grimy avantoe(noted)1/1925,51430
Grimy ranarr weed.png: Hydra drops Grimy ranarr weed with rarity 1/240 in quantity 3 (noted)Grimy ranarr weed(noted)1/24023,66754
Grimy snapdragon.png: Hydra drops Grimy snapdragon with rarity 1/320 in quantity 3 (noted)Grimy snapdragon(noted)1/32030,04836
Grimy torstol.png: Hydra drops Grimy torstol with rarity 1/320 in quantity 3 (noted)Grimy torstol(noted)1/32023,27445

Seeds[edit | edit source]

There is a 4/128 chance of rolling the rare seed drop table.

Item Quantity Rarity Price High Alch
Toadflax seed.png: Hydra drops Toadflax seed with rarity 1/162 in quantity 1Toadflax seed11/1629886
Irit seed.png: Hydra drops Irit seed with rarity 1/238 in quantity 1Irit seed11/238423
Belladonna seed.png: Hydra drops Belladonna seed with rarity 1/245.7 in quantity 1Belladonna seed11/245.733106
Poison ivy seed.png: Hydra drops Poison ivy seed with rarity 1/346.2 in quantity 1Poison ivy seed11/346.21899
Avantoe seed.png: Hydra drops Avantoe seed with rarity 1/346.2 in quantity 1Avantoe seed11/346.28534
Cactus seed.png: Hydra drops Cactus seed with rarity 1/362.7 in quantity 1Cactus seed11/362.76959
Potato cactus seed.png: Hydra drops Potato cactus seed with rarity 1/507.7 in quantity 1Potato cactus seed11/507.72884
Kwuarm seed.png: Hydra drops Kwuarm seed with rarity 1/507.7 in quantity 1Kwuarm seed11/507.72656
Snapdragon seed.png: Hydra drops Snapdragon seed with rarity 1/761.6 in quantity 1Snapdragon seed11/761.666,23536
Cadantine seed.png: Hydra drops Cadantine seed with rarity 1/1,088 in quantity 1Cadantine seed11/1,0889814
Lantadyme seed.png: Hydra drops Lantadyme seed with rarity 1/1,523.2 in quantity 1Lantadyme seed11/1,523.21,9715
Snape grass seed.png: Hydra drops Snape grass seed with rarity 1/1,904 in quantity 3Snape grass seed31/1,9045,721168
Dwarf weed seed.png: Hydra drops Dwarf weed seed with rarity 1/2,538.7 in quantity 1Dwarf weed seed11/2,538.75673
Torstol seed.png: Hydra drops Torstol seed with rarity 1/3,808 in quantity 1Torstol seed11/3,80854,11142

Bolt tips[edit | edit source]

There is a 2/128 chance of rolling the bolt tips drop table.

Item Quantity Rarity Price High Alch
Diamond bolt tips.png: Hydra drops Diamond bolt tips with rarity 1/256 in quantity 20Diamond bolt tips201/2563,4001,580
Ruby bolt tips.png: Hydra drops Ruby bolt tips with rarity 1/284.4 in quantity 20Ruby bolt tips201/284.41,880800
Emerald bolt tips.png: Hydra drops Emerald bolt tips with rarity 1/284.4 in quantity 20Emerald bolt tips201/284.41,040380
Dragonstone bolt tips.png: Hydra drops Dragonstone bolt tips with rarity 1/365.7 in quantity 20Dragonstone bolt tips201/365.74,2008,000
Onyx bolt tips.png: Hydra drops Onyx bolt tips with rarity 1/853.3 in quantity 20Onyx bolt tips201/853.3159,52012,000
Sapphire bolt tips.png: Hydra drops Sapphire bolt tips with rarity 1/1,280 in quantity 20Sapphire bolt tips201/1,280340200

Other[edit | edit source]

Item Quantity Rarity Price High Alch
Coins_1000.png: Hydra drops Coins with rarity 16/128 in quantity 500-3500Coins500–3,50016/128500-3,500500-3,500
Monkfish.png: Hydra drops Monkfish with rarity 11/128 in quantity 1Monkfish111/128385138
Super combat potion(1).png: Hydra drops Super combat potion(1) with rarity 4/128 in quantity 1Super combat potion(1)14/1282,23924
Dragon bones.png: Hydra drops Dragon bones with rarity 3/128 in quantity 3-5 (noted)Dragon bones3–5 (noted)3/1288,499-14,165288-480
Super restore(1).png: Hydra drops Super restore(1) with rarity 6/128 in quantity 1-2Super restore(1)1–26/1283,028-6,05672-144

Gem drop table[edit | edit source]

There is a 1/128 chance of rolling the gem drop table.

Item Quantity Rarity Price High Alch
Uncut sapphire.png: Hydra drops Uncut sapphire with rarity 1/512 in quantity 1Uncut sapphire11/512; 1/260[d 1]49815
Uncut emerald.png: Hydra drops Uncut emerald with rarity 1/1,024 in quantity 1Uncut emerald11/1,024; 1/520[d 1]67730
Uncut ruby.png: Hydra drops Uncut ruby with rarity 1/2,048 in quantity 1Uncut ruby11/2,048; 1/1,040[d 1]1,35060
Nature talisman.png: Hydra drops Nature talisman with rarity 1/5,461.33 in quantity 1Nature talisman11/5,461.33; 1/2,773.33[d 1]1,1692
Uncut diamond.png: Hydra drops Uncut diamond with rarity 1/8,192 in quantity 1Uncut diamond11/8,192; 1/4,160[d 1]2,984120
Loop half of key.png: Hydra drops Loop half of key with rarity 1/16,384 in quantity 1Loop half of key11/16,384; 1/8,320[d 1]9,61260
Tooth half of key.png: Hydra drops Tooth half of key with rarity 1/16,384 in quantity 1Tooth half of key11/16,384; 1/8,320[d 1]9,74060
Rune javelin.png: Hydra drops Rune javelin with rarity 1/16,384 in quantity 5Rune javelin51/16,384; 1/8,320[d 1]8601,200
Rune spear.png: Hydra drops Rune spear with rarity 1/262,144 in quantity 1Rune spear11/262,144; 1/15,600[d 1][d 2]11,94112,480
Shield left half.png: Hydra drops Shield left half with rarity 1/524,288 in quantity 1Shield left half11/524,288; 1/31,200[d 1][d 2]65,44466,000
Dragon spear.png: Hydra drops Dragon spear with rarity 1/699,050.67 in quantity 1Dragon spear11/699,050.67; 1/41,600[d 1][d 2]37,67937,440
  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 The drop rate of this item is increased when wearing a Ring of wealth.
  2. 2.0 2.1 2.2 The Rune spear, Shield left half and Dragon spear will only be dropped if Legend's Quest has been started, or else a talisman will be dropped as a replacement.

Tertiary[edit | edit source]

Item Quantity Rarity Price High Alch
Brimstone key.png: Hydra drops Brimstone key with rarity 1/81.2 in quantity 1Brimstone key11/81.2[d 1]Not soldN/A
Clue scroll (hard).png: Hydra drops Clue scroll (hard) with rarity 1/128 in quantity 1Clue scroll (hard)11/128[1]Not sold12
Clue scroll (elite).png: Hydra drops Clue scroll (elite) with rarity 1/512 in quantity 1Clue scroll (elite)11/512[2]Not sold12
  1. Brimstone keys are only dropped if killed on a slayer assignment given by Konar quo Maten.

Changes[edit | edit source]

Date Changes
7 February 2019
(update | poll)
The damage from the Hydra's poison splat attacks are now halved should players have a form of immunity against poison.

References[edit | edit source]

  1. 1.0 1.1 1.2 1.3 1.4 1.5 1.6 Jagex. Mod Munro's Twitter account. 13 Feb 2019. (Archived from the original on 25 Mar 2019.) Mod Munro: "As I mentioned on the Q & A, here are the pictures of the drop rates for various parts of Kebos. This time with the correct drop rate for the pieces of the Brimstone Ring."
  2. Jagex. Mod Tide's Twitter account. 24 May 2019. (Archived from the original on 24 May 2019.) Mod Tide: "I know its been a while since the clue expansion but here is the information on clue scroll drop rates and loot chances! If anything changes I will keep you posted."