Essences are used both in crafting magical items, a well as reagents for spells. Elemental essences are dropped by their respective guardians, and all essences can also be crafted using the Essence Refiner.
Ender Essence is a component added by Ars Magica 2. It is used to craft the Keystone Receptacle, Astral Barrier, Pure Essence, and Deficit Crystal. Additionally, it's used to create certain spells in the Crafting Altar.
It can be obtained by killing the Ender Guardian or Hecate.
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