Cosmic rune

Cosmic rune is an item in Slaskescape 2.

Magic combat · 1 per Cosmic collapse
Recipes · Archaeology, Divination, Dungeoneering, Elementalism, Fletching, Herblore, Magic, Runecrafting, Summoning

Contents

Sources
Creation
Used in recipes

Sources


Cosmic rune	Activity	Runecrafting 90	1	Guaranteed
Astral sovereign	Monster drop	Tidehaven	2–5	33.33%
Avalanche pass	Per cache	Mountaineering 64	3–8	22%
Aurora ridge	Per cache	Mountaineering 76	3–8	22%
Stormbreak ascent	Per cache	Mountaineering 88	3–8	22%
Celestial vault cache	Per cache	Dungeoneering 88	2–37	69.6%

Other in-game source notes

Mountaineering · Avalanche pass to Stormbreak ascent
Dungeoneering · Celestial vault cache
Runecrafting · Lv 90
Monsters · Astral sovereign
Vault caches · Dungeoneering Lv 88
Noob Forest · Runecrafting

Monster chances are per defeat; cache chances are per cache. Sailing chances are per treasure roll, not per whole voyage.

Creation


Cosmic rune	Runecrafting	90	2 × Wild essence+1 × Cosmic energy	1 × Cosmic rune	2,359,640	4.8s

Used in recipes


Cosmic mote	Magic	90	1 × Cosmic rune	1 × Cosmic mote	1,295,031	4.8s
Lifebloom magic elixir	Herblore	93	2 × Lifebloom+1 × Cosmic rune	1 × Lifebloom magic elixir	2,944,341	4.8s
Skyglass raven pouch	Summoning	90	1 × Celestial antler+1 × Cosmic rune	1 × Skyglass raven pouch	3,082,954	5.8s
Celestial vault cache	Dungeoneering	88	1 × Grilled crownfish+1 × Cosmic rune	1 × Celestial vault cache	1,059,271	5.8s
Cosmic robe	Divination	90	4 × Cosmic energy+6 × Cosmic rune+2 × Lifebloom+2 × Royal brocade+1 × Uncut onyx	1 × Cosmic robe	507,670	9.7s
Cosmic circlet	Divination	90	2 × Cosmic energy+3 × Cosmic rune+2 × Lifebloom+1 × Royal brocade+1 × Uncut onyx	1 × Cosmic circlet	507,670	9.7s
Cosmic leggings	Divination	90	2 × Cosmic energy+3 × Cosmic rune+2 × Lifebloom+1 × Royal brocade+1 × Uncut onyx	1 × Cosmic leggings	507,670	9.7s
Prismatic arcanist robe	Divination	99	1 × Prismatic heart+10 × Cosmic energy+30 × Cosmic rune	1 × Prismatic arcanist robe	13,229,613	14s
Worldtree staff	Fletching	92	3 × Worldtree logs+2 × Worldtree charcoal+6 × Cosmic rune	1 × Worldtree staff	4,408,045	6.25s
Prismatic archstaff	Fletching	99	1 × Prismatic heart+8 × Worldtree logs+30 × Cosmic rune+4 × Stormglass	1 × Prismatic archstaff	13,229,613	14s
Void current	Elementalism	114	1 × Winterheart crystal+1 × Nightbound essence+3 × Cosmic rune	1 × Void current	139,423,208	5.21s
World current	Elementalism	122	1 × Polar diamond ore+1 × Starless covenant+3 × Cosmic rune	1 × World current	460,308,019	5.4s
Crown of elements	Elementalism	129	1 × Sovereign ice+1 × Winter soul+3 × Cosmic rune	1 × Crown of elements	551,131,730	5.59s
Aurora rune	Elementalism	101	2 × Aurora current+4 × Cosmic rune+1 × Siren pearls	1 × Aurora rune	18,110,017	4s
Sovereign rune	Elementalism	122	2 × World current+4 × Cosmic rune+1 × Leviathan scale	1 × Sovereign rune	489,578,080	4s
Amber rune matrix	Runecrafting	101	2 × Starfrost ore+6 × Cosmic rune+1 × Star-gold flakes	1 × Amber rune matrix	18,110,017	6s
Glacial rune matrix	Runecrafting	109	2 × Winterheart crystal+6 × Cosmic rune+1 × Voidgold concentrate	1 × Glacial rune matrix	63,592,480	7s
Astral rune matrix	Runecrafting	120	2 × Polar diamond ore+6 × Cosmic rune+1 × Prismatic gravel	1 × Astral rune matrix	357,643,421	8s
Sovereign rune matrix	Runecrafting	129	2 × Sovereign ice+6 × Cosmic rune+1 × Crown-gold nugget	1 × Sovereign rune matrix	1,024,935,443	9s
Astral beckoning sigil	Archaeology	122	10 × First star astrolabe+29 × Cosmic energy+38 × Cosmic rune+11 × Pale covenant+3 × Crucible salamander scale	1 × Astral beckoning sigil	489,578,080	8s
Sovereign beckoning sigil	Archaeology	129	11 × First star astrolabe+32 × Cosmic energy+42 × Cosmic rune+12 × Winter soul+3 × Crownfang pelt	1 × Sovereign beckoning sigil	1,255,848,165	8s
Weave void charm	Divination	98	2 × Cosmic energy+3 × Cosmic rune+1 × Eclipse codex	1 × Void charm	654,214	4s
Weave cosmic charm	Divination	99	2 × Cosmic energy+3 × Cosmic rune+1 × First star astrolabe	1 × Cosmic charm	13,229,613	4s

Game data: 0c38504b · Checked 9 October 2026 · About these numbers