Ancient Custodian | OSRS Index

Ancient Custodian



Released		23 July 2025 (Update)
Members		Yes
Combat level		239
Size		2x2
Examine		Old as...
League region		Varlamore✓

Combat info

Max hit		19
Aggressive		Yes
Poisonous		No
Attack style		Crush
Attack speed		4 ticks (2.4 seconds)

Slayer info

Slayer level		76
Slayer XP		3,382 xp
Category		Custodian Stalker
Assigned by

Combat stats


330	240	180	80	80	1

Aggressive stats


+0	+0	+45	+0	+0	+0

Melee defence


+50		-30		+80

Magic defence


+0			30% weakness

Ranged defence


-10		+5		+60

Immunities

Poison		100% resistance
Venom		100% resistance
Cannons		Not immune
Thralls		Not immune

Open in DPS calculator
Advanced data

Monster ID		14520
Link		MOID

The Ancient Custodian is a superior variant of custodian stalkers. It has a chance of spawning after purchasing the unlock Bigger and Badder for 50 Slayer reward points from any Slayer master, as long as an Elder custodian stalker was killed.

An ancient Custodian appears and howls, with the nearby Custodian stalkers howling alongside it.

When an ancient Custodian spawns, a unique animation plays in which up to three other nearby Custodian stalkers will howl alongside it.

Drops

In addition to 100% drops and tertiary drops, superior slayer monsters will always roll 3 additional items, of which only 1 roll may be from the superior unique table. The other rolls are performed on the regular counterpart's table.

Drop rates are estimated based on 1,111,510 samples from the Drop Rate Project, unless otherwise cited.

Signet	Average drop value
Signet	GE	HA
No	183,943.73	4,931.86
Yes	188,546.46	9,534.59

100%

	Item	Quantity	Rarity	Price	High Alch
	Big bones	1	Always	238	0

Runes and ammunition

Item	Quantity	Rarity	Price	High Alch
Steel cannonball	20–30	3 × 15/124	5,580–8,370	60–90
Air rune	200	3 × 12/124	1,000	400
Fire rune	150	3 × 12/124	750	300
Rune arrow	20–35	3 × 12/124	940–1,645	4,800–8,400
Death rune	40–50	3 × 6/124	7,520–9,400	4,320–5,400

Resources

Item	Quantity	Rarity	Price	High Alch
Shark	2–3	3 × 12/124	2,058–3,087	204–306
Pure essence	30 (noted)	3 × 12/124	60	60
Mithril bar	10–15 (noted)	3 × 6/124	9,580–14,370	1,800–2,700
Broken antler	1	3 × 4/124	5,941	31
Raw beef	1	3 × 4/124	32	0
Huasca seed	2–3	3 × 1/124	92,112–138,168	84–126

Other

	Item	Quantity	Rarity	Price	High Alch
	Coins	1,180–1,300	3 × 19/124	1,180–1,300	1,180–1,300
	Alchemist's signet	1	3 × 2/124	Not sold	3,000

Rare drop table

There is a 1/124 chance of rolling the rare drop table. There is also a 6/124 chance of rolling the gem drop table.

Item	Quantity	Rarity	Price	High Alch
Nothing	N/A	3 × 1/39.04; Never^{[d 1]}	N/A	N/A
Coins	3,000	3 × 1/755.81	3,000	3,000
Uncut sapphire	1	3 × 1/80.57; 1/40.91^{[d 2]}	231	15
Loop half of key	1	3 × 1/606.81; 1/494.1^{[d 2]}	9,679	60
Tooth half of key	1	3 × 1/606.81; 1/494.1^{[d 2]}	9,771	60
Uncut emerald	1	3 × 1/161.14; 1/81.83^{[d 2]}	467	30
Uncut ruby	1	3 × 1/322.27; 1/163.65^{[d 2]}	1,104	60
Runite bar	1	3 × 1/3,174.4	12,263	3,000
Nature rune	67	3 × 1/5,290.67	11,524	7,236
Rune 2h sword	1	3 × 1/5,290.67	38,075	38,400
Rune battleaxe	1	3 × 1/5,290.67	24,449	24,960
Law rune	45	3 × 1/7,936	5,535	6,480
Death rune	45	3 × 1/7,936	8,460	4,860
Steel arrow	150	3 × 1/7,936	900	1,050
Rune arrow	42	3 × 1/7,936	1,974	10,080
Adamant javelin	20	3 × 1/7,936	760	1,920
Rune sq shield	1	3 × 1/7,936	22,553	23,040
Dragonstone	1	3 × 1/7,936	10,748	6,000
Silver ore	100 (noted)	3 × 1/7,936	6,100	4,500
Nature talisman	1	3 × 1/859.4; 1/436.41^{[d 2]}	280	2
Uncut diamond	1	3 × 1/1,289.1; 1/654.62^{[d 2]}	2,441	120
Rune kiteshield	1	3 × 1/15,872	31,964	32,640
Dragon med helm	1	3 × 1/15,872	58,453	60,000
Rune spear	1	3 × 1/12,003.64; 1/1,097.22^{[d 2]}^{[d 3]}	11,622	12,480
Rune javelin	5	3 × 1/2,578.19; 1/1,309.24^{[d 2]}	675	1,200
Shield left half	1	3 × 1/24,007.28; 1/2,194.44^{[d 2]}^{[d 3]}	65,036	66,000
Dragon spear	1	3 × 1/32,009.71; 1/2,925.92^{[d 2]}^{[d 3]}	38,083	37,440

^ The "nothing" drop is removed while wearing a ring of wealth.
^ ^2.00 ^2.01 ^2.02 ^2.03 ^2.04 ^2.05 ^2.06 ^2.07 ^2.08 ^2.09 ^2.10 The drop rate is increased while wearing a ring of wealth due to the "nothing" drop being removed.
^ ^3.0 ^3.1 ^3.2 Slightly reduced chance of dropping if Legends' Quest has not been completed.

Tertiary

Item	Quantity	Rarity	Price	High Alch
Antler guard	1	1/650	865,558	60,000
Long bone	1	1/400	Not sold	3
Curved bone	1	1/5,012.5	Not sold	4

Superior Slayer tertiary

The chance to spawn a superior creature is 1/200.^{[d 1]}

Item	Quantity	Rarity	Price	High Alch
Mist battlestaff	1	1/144	67,262	9,300
Dust battlestaff	1	1/144	8,930	9,300
Eternal gem	1	1/504	9,427,868	5,700
Imbued heart	1	1/504	76,439,133	300,000

^ The superior creature spawn rate increases to 1/150 after unlocking the elite Combat Achievements rewards tier.

Slayer monsters

Slayer Tower

Fremennik Slayer Dungeon

Lumbridge Swamp Caves

Karuulm Slayer Dungeon

Wyvern Cave

Catacombs of Kourend

God Wars Dungeon (Wilderness)

Neypotzli

Ruins of Tapoyauik

Others

	Desert Lizard Pyrelord Mogre Harpie Bug Swarm Killerwatt Vyre Sentinel Molanisk Terror dog Sea snake Young Hatchling Fever spider Brine rat Gryphon Boss Juvenile custodian stalker Warped Terrorbird Warped Tortoise Mutated Zygomite Ancient Cave horror Basilisk Knight Lava Strykewyrm Dust devil Mature custodian stalker Skeletal Wyvern Venator Aquanite Elder custodian stalker Cave kraken boss Dark beast Araxyte boss Cerberus Smoke devil boss
Superior monsters	Crushing hand Chasm Crawler Screaming banshee Twisted Giant rockslug Cockathrice Flaming pyrelord Infernal Monstrous basilisk Malevolent Mage Insatiable Bloodveld Mutated Dire Gryphon Vitreous Jelly Warped Chilled Spiked Turoth Mutated Terrorbird Mutated Tortoise Cave abomination Abhorrent spectre Repugnant Basilisk Sentinel Magma strykewyrm Shadow Wyrm Choke devil King kurask Blood-starved venator Marble gargoyle Ancient Custodian Elder Aquanite Nechryarch Guardian Drake Greater abyssal demon Night beast Nuclear smoke devil Dreadborn Araxyte Colossal Hydra

Source site	Old School RuneScape Wiki
Canonical source	Ancient Custodian
Content license	CC BY-NC-SA 3.0
License status	declared
Picture	Ancient Custodian · file details