Cosmic Crucible

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Cosmic Crucibles are unique devices that can upgrade items far beyond their normal stats. They can be found in Precursor microdungeons, in the Precursor Ruins mission, and in a hidden area of the Science Outpost.

Weapons can be improved from level 1 up to level 10.

Updated as of v5.6.347

The Cosmic Crucible and the tiles below it are impervious to any attempts to remove it. If you somehow remove the Cosmic Crucible, no items will be dropped (not even the anvil).

Stats Upgrade Per Level

Tools

Tool (if given)	Parameter (if applicable)	Additive Increase	Multiplicative Increase
Fishing Rod	Reel Length Reel Speed Line Break Time	+ 10 length +2 speed +0.1 seconds
Parasol	AirForce Run Speed Walk Speed Max Fall Speed	- 4 Max Fall Speed	x 1.15 AirForce x 1.15 Run Speed x 1.15 Walk Speed
Other tools	Firing Time Block Radius Alt Block Radius	+1 Block Radius +1 Alt Block Radius	x 1.15 Firing Time

Shields

Shields	Parameter	Additive Increase	Multiplicative Increase
Shields	Shield Bash Shield Bash Push Cooldown Time Perfect Block Time Shield Health Energy Bonus	+ 0.5 +base value Shield Bash + 0.5 Shield Bash Push	x 0.98 Cooldown Time x 1.05 Perfect Block Time x 1.15 Shield Health x 1.05 Energy bonus

Weapons

Weapon	Parameter (if applicable)	Additive Increase	Multiplicative Increase
Wand/Staff	Primary ability Damage Max Cast Range	+ Upgrade lvl / 4 Max Cast Range	x 1.15 damage
Magnorbs	Shield Knockback Shield Energy Cost Shield Health	+1 Shield Knockback +1 Shield Energy Cost +1 Shield Health
Projectiles (includes magnorbs)	Primary ability Damage Control Force	+ upgrade lvl / 7 dmg + upgrade lvl Control Force
Beam Weapons	Beam Length	+ Upgrade lvl Beam Length
Primary Atk uses Energy	Energy Cost	- Upgrade lvl /3 Energy Cost
Rapier, Mace, Katana	Crit Chance Crit Dmg	+ 0.15 Crit Chance + 0.5 Crit Dmg
All Others	Crit Chance Crit Dmg	+ 0.10 Crit Chance + 0.5 Crit Dmg
Rapier, Axe, Hammer, Katana, Mace, Great Axe, Scythe	Fire Rate (Time) Note: The minimum is 0.1	No Change :(
All except Rapier, Axe, Hammer, Katana, Mace, Great Axe, Scythe	Fire Rate (Time) Note: The minimum is 0.1	Fire Rate = Original - {Original x [(Upgrade lvl/20)*0.25]} Where Original is the fire rate value currently.
Anything with primary atk and DPS	DPS Note: Won't upgrade if DPS is at or above 20	DPS = Original * [1+ (upgrade lvl/ 80)]
Stun weapons (mace, hammer, greataxe, quarterstaff)	Stun Chance	+ 0.5 +base value Stun Chance

Extra Dungeons Upgrade Anvil

Some Extra Dungeons, and the Heaven instance found at the end of in-world dungeons, contain a variant of the Cosmic Crucible, appearing as a red variant of the vanilla Weapon Upgrade Anvil. This anvil acts in an identical manner to the Crucible, with the same interface, capabilities, and essence costs.

Fake Cosmic Crucible

There is also a fake Cosmic Crucible which is rigged with instakilling bees (that can also bypass admin mode) by Kevin. When attempting to place the item down, it will disappear from the player's inventory, and release the bees inside.

The rigged version is inaccessible by normal means, and can be only spawned in Category:Needs Data Category:Upgrade Item