Ethereal Core

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Ethereal Core
  • Ethereal Core.png
Stack digit 1.png
TypePermanent power-up
Use time30 Very Slow
TooltipPermanently increases maximum mana by 50
RarityRarity Level: 10
SellNo value
Research1 required
Ethereal Core (Mana).png
Star icon after using the Ethereal Core
Ethereal Core (Mana Bar).png
Mana Bar after using the Ethereal Core
Not to be confused with Starcore, a summoning item used to summon Astrum Deus.

The Ethereal Core is a craftable Hardmode permanent power-up item that can only be consumed once, and upon consumption, increases the player's maximum mana by 50. There are 2 other items that function identically to this: the Comet Shard and the Phantom Heart. It can only be used once, and after that the player must use one of the remaining items to increase their maximum mana. With all of these, the player's maximum mana is capped at 350.



Crafting Station
Ancient ManipulatorAncient Manipulator
Astral BarAstral Bar25
Nebula FragmentNebula Fragment20
Fallen StarFallen Star20
Ethereal CoreEthereal Core1


  • If the player attempts to use a second Etheral Core, the custom status message displayed is "You have already used an Ethereal Core. Your brain would escape your head if you dared to use it a second time."

See also


These history sections are still a work-in-progress, and may not yet contain changes relevant to the current version of the Calamity Mod.
    • Added a new use sound.
    • Now has a new text color on its status message.
    • Changed flavor text when attempting to consume it more than once from "It's best to not use more than you are able to." to "Your brain would escape your head if you dared to use it a second time."
    • Resprited it and its stars and bars.
  • Now supports the Fancy and Bar mana styles.
  • Now uses 20 Fallen Stars in its recipe instead of 50, and no longer uses 25 Meteorite Bars.
  • Now mentions in the tooltip whether or not the player has consumed it before.
    • Resprited.
    • Fixed a bug with max mana boost.
  • Swapped its mana star texture with Phantom Heart's.
    • Now uses 20 Nebula Fragments and 50 Fallen Stars in its recipe instead of 50 and 100.
    • Reduced max mana boost from 100 to 50.
  • Now changes the visuals of the mana bar when used.