Hydra

This article has a Slayer task guide here. Information comparing locations for Slayer tasks will be on this page.

Hydra
Released								10 January 2019 (Update)
Members								Yes
Combat level								194
Size								3x3
Examine								A ferocious Hydra!
Combat info
Attribute								Draconic
XP bonus								+7.5%
Max hit								22
Aggressive								Yes
Poisonous								Yes (special attack)
Attack style								Magic, Ranged
Attack speed								6 ticks (3.6 seconds)
Respawn time								25 ticks (15 seconds)
Slayer info
Slayer level								95
Slayer XP								322.5 xp
Category								Hydras
Assigned by
Combat stats
300				1				1				100				210				210
Aggressive stats
+0				+0				+0				+0				+0				+0
Melee defence
+160								+160								+160
Magic defence
+160												40% weakness
Ranged defence
+0								+0								+0
Immunities
Poison								0% resistance
Venom								0% resistance
Open in DPS calculator
Advanced data
Monster ID								8609
Link								MOID

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 a Dragonkin named Karuulm 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 and Mortimer. 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 normal Hydras on the lower level of Mount Karuulm are not, so the achievement can be achieved by boosting from as low as level 90 Slayer using a Wild pie, or other temporary skill boost.

Location	Levels	Members	Spawns	Map	League region
Karuulm Slayer Dungeon	194		17	Show map	Kourend✓

Hydras start off with a random combat style at the start of the battle, switching after three attacks, regardless if they hit or not. The magic attack appears as a trio of three dark green trails of spit shot from the left head, and arching to the player (not to be confused with the poison splats, which are light green orbs), while the ranged attack looks like a throwing knife being launched at the player from the right head, moving straight forward. During the fight, the middle head of the hydra 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.

The following money making guide is available for Hydra:

Drop rates are estimated based on 16,739 samples from the Drop Rate Project, unless otherwise cited.

	Item	Quantity	Rarity	Price	High Alch
	Hydra bones	1	Always	7,232	96

	Item	Quantity	Rarity	Price	High Alch
	Hydra's eye	1	1/1,800.72; 1/360.72[d 1][d 2][1]	Not sold	60,000
	Hydra's fang	1	1/1,800.72; 1/360.72[d 1][d 2][1]	Not sold	60,000
	Hydra's heart	1	1/1,800.72; 1/360.72[d 1][d 2][1]	Not sold	60,000
	Hydra tail	1	1/5,001; 1/1,001[d 1][1]	98,252	60,000
	Dragon thrownaxe	200–400	1/10,000; 1/2,000[d 1][1]	79,000–158,000	90,000–180,000
	Dragon knife	200–400	1/10,001; 1/2,001[d 1][1]	841,800–1,683,600	20,000–40,000

	Item	Quantity	Rarity	Price	High Alch
	Black d'hide chaps	1	3/128	3,233	3,732
	Battlestaff	2–3 (noted)	2/128	14,360–21,540	8,400–12,600
	Fire battlestaff	1	5/128	8,725	9,300
	Water battlestaff	1	5/128	8,721	9,300
	Rune kiteshield	1	3/128	32,110	32,640
	Rune platebody	1	1/128	38,547	39,000
	Mystic robe bottom	1	1/128	47,260	48,000
	Dragon longsword	1	1/128	59,010	60,000

	Item	Quantity	Rarity	Price	High Alch
	Blood rune	15–45	9/128	5,610–16,830	3,600–10,800
	Chaos rune	20–50	9/128	2,120–5,300	1,080–2,700
	Death rune	30–60	9/128	5,550–11,100	3,240–6,480
	Fire rune	70–90	9/128	350–450	140–180
	Law rune	30–60	9/128	3,690–7,380	4,320–8,640
	Water rune	70–90	9/128	350–450	140–180

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	1–3	1/128	189–567	7–21
	Grimy marrentill	1–3	1/170.7	185–555	8–24
	Grimy tarromin	1–3	1/227.6	120–360	9–27
	Grimy harralander	1–3	1/292.6	284–852	9–27
	Grimy ranarr weed	1–3	1/372.4	5,262–15,786	18–54
	Grimy irit leaf	1–3	1/512	1,258–3,774	10–30
	Grimy avantoe	1–3	1/682.7	1,341–4,023	10–30
	Grimy kwuarm	1–3	1/819.2	1,814–5,442	12–36
	Grimy cadantine	1–3	1/1,024	2,076–6,228	13–39
	Grimy lantadyme	1–3	1/1,365.3	1,232–3,696	13–39
	Grimy dwarf weed	1–3	1/1,365.3	1,343–4,029	14–42
	Grimy avantoe	3 (noted)	1/192	4,023	30
	Grimy ranarr weed	3 (noted)	1/240	15,786	54
	Grimy snapdragon	3 (noted)	1/320	21,654	36
	Grimy torstol	3 (noted)	1/320	8,862	45

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

	Item	Quantity	Rarity	Price	High Alch
	Toadflax seed	1	1/161.5	979	6
	Irit seed	1	1/235.7	72	3
	Belladonna seed	1	1/243.9	108	106
	Poison ivy seed	1	1/338.6	13	99
	Avantoe seed	1	1/345.3	356	4
	Cactus seed	1	1/363.3	48	59
	Potato cactus seed	1	1/498.3	9	84
	Kwuarm seed	1	1/505.5	2,003	6
	Snapdragon seed	1	1/758.3	43,773	36
	Cadantine seed	1	1/1,090	5,135	4
	Lantadyme seed	1	1/1,516.5	113	5
	Snape grass seed	3	1/1,744	45,303	168
	Dwarf weed seed	1	1/2,491.4	690	3
	Torstol seed	1	1/3,875.6	15,463	42

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

	Item	Quantity	Rarity	Price	High Alch
	Diamond bolt tips	20	1/256	3,380	1,580
	Ruby bolt tips	20	1/284.4	2,040	800
	Emerald bolt tips	20	1/284.4	600	380
	Dragonstone bolt tips	20	1/365.7	8,480	8,000
	Onyx bolt tips	20	1/853.3	161,560	12,000
	Sapphire bolt tips	20	1/1,280	100	200

	Item	Quantity	Rarity	Price	High Alch
	Coins	500–3,500	16/128	500–3,500	500–3,500
	Monkfish	1	11/128	155	138
	Super combat potion(1)	1	4/128	3,064	24
	Dragon bones	3–5 (noted)	3/128	9,972–16,620	288–480
	Super restore(1)	1–2	6/128	2,434–4,868	72–144

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

	Item	Quantity	Rarity	Price	High Alch
	Nothing	N/A	1/256.47; Never[d 1]	N/A	N/A
	Uncut sapphire	1	1/512; 1/260[d 2]	228	15
	Uncut emerald	1	1/1,024; 1/520[d 2]	473	30
	Uncut ruby	1	1/2,048; 1/1,040[d 2]	1,087	60
	Nature talisman	1	1/5,461.33; 1/2,773.33[d 2]	268	2
	Uncut diamond	1	1/8,192; 1/4,160[d 2]	2,439	120
	Rune javelin	5	1/16,384; 1/8,320[d 2]	675	1,200
	Loop half of key	1	1/16,384; 1/8,320[d 2]	9,756	60
	Tooth half of key	1	1/16,384; 1/8,320[d 2]	9,887	60
	Rune spear	1	1/262,144; 1/15,600[d 2][d 3]	11,599	12,480
	Shield left half	1	1/524,288; 1/31,200[d 2][d 3]	65,355	66,000
	Dragon spear	1	1/699,050.67; 1/41,600[d 2][d 3]	38,438	37,440

	Item	Quantity	Rarity	Price	High Alch
	Brimstone key	1	1/65[d 1]	Not sold	N/A
	Clue scroll (hard)	1	1/128[d 2][d 3][1]	Not sold	12
	Clue scroll (elite)	1	1/512[d 4][d 3][2]	Not sold	12