Cosmi-Rod (Universal Weapon)
The Cosmi-Rod, also known as the Universal Weapon, is an endgame item dropped by the Servant of Celestial [Rare] NPC in the Catacombs. It ranks S-tier on our tier list for sustained DPS and versatility across all game content.
How to Obtain
- Craft Stormbreaker to unlock Catacombs access.
- Enter the Catacombs via the teleporter opposite the Forge.
- Locate and defeat the Servant of Celestial [Rare] NPC.
- The Cosmi-Rod drops upon kill.
Mjolnir makes this fight significantly easier due to superior boss damage.
Abilities
- Hammer Swing (Left Click) — Cosmic melee attack
- Charge (Q) — Charge for special abilities
- Cosmic Beam (R) — Ranged beam with high sustained DPS
- Hammer Smash (E) — Ground slam; interacts with Celestial Fragment stone
- Universal Strike (X) — High-damage finisher against boss NPCs
Celestial Fragment Interaction
Hammer Smash (E) on the frozen stone at the end of the Catacombs (freeze with Casket of Ancient Winters M1 first) yields the Celestial Fragment. This fragment is used for Celestial Forge upgrades alongside kill milestones.
Frequently Asked Questions
Where is the Servant of Celestial NPC?
In the Catacombs, accessible only after crafting Stormbreaker. The Rare variant drops the Cosmi-Rod.
Do I need Mjolnir for the Cosmi-Rod fight?
Not required, but strongly recommended. Mjolnir Strike handles the Servant of Celestial's high health efficiently.
Is the Cosmi-Rod the best weapon?
It is S-tier alongside the Upgraded Gauntlet and Upgraded Stormbreaker. Best choice depends on your playstyle and content.
What is the Celestial Fragment used for?
Celestial Fragments combine with kill milestones at the Celestial Forge for gauntlet and Stormbreaker upgrades.