Cosmic Rune
Cosmic Rune is a rune used to cast spells. It is obtained through level 30 Runecrafting.
On this page
Item sources
Skill activities
| Activity | Requirement | Base quantity | Base time | Experience |
|---|---|---|---|---|
 Cosmic Rune | 30 Runecrafting | 1 | 8 seconds | 53 XP |
Monster drops
| Monster | Quantity | Chance per kill |
|---|---|---|
 Fire Giant | 10–25 | 7.225% |
 Mummy | 2–4 | 5.6628% |
 Lesser Demon | 2–4 | 6.5185% |
 Gargoyle | 4–7 | 7.2488% |
 Dagannoth | 2–4 | 6.1367% |
 Cave Horror | 2–4 | 8.9888% |
 Nechryael | 4–7 | 9.8765% |
 Abyssal Demon | 4–7 | 11.3523% |
 Dark Beast | 4–9 | 9.4915% |
 Greater Demon | 10–20 | 9.4499% |
 Smoke Devil | 4–8 | 11.6638% |
 Drake | 4–9 | 7.3675% |
 Wyrm | 4–6 | 9.0788% |
 Lava Dragon | 4–11 | 7.0435% |
 Wildy Boss | 4–22 | 7.8883% |
 Elf | 2–4 | 8.1042% |
 Red Dragon | 4–8 | 8.2077% |
 Lava Golem | 2–4 | 12.0354% |
 Ember Dragon | 4–6 | 7.152% |
 Ashen Phoenix | 4–7 | 7.225% |
 Kraken | 4–7 | 7.3394% |
 Deep Sea Leviathan | 4–18 | 6.7786% |
 Void Aberration | 2–4 | 7.7739% |
 Rift Walker | 2–4 | 7.3203% |
 Dimensional Horror | 4–6 | 11.0569% |
 Reality Shifter | 4–7 | 7.2848% |
Guaranteed drops are separate from the weighted reward pool. Each kill selects at most one reward from that pool.
Containers
| Container | Quantity | Chance per opening |
|---|---|---|
 Arcane Orb | 40–70 | 7.057% |
Thieving
| Target | Quantity | Chance per successful action |
|---|---|---|
 Pickpocket Arcanist | 1 | 1/10 (10%) |
Uses
Spells
| Spell | Magic requirement | Runes per cast |
|---|---|---|
 Arc Light | 30 | 1 |
