"The frigid moon shimmers brightly."
Endothermic Energy is a post-Moon Lord crafting material dropped by Ice Queens after the Devourer of Gods has been defeated. It is always used in conjunction with Nightmare Fuel.
- It takes 631 Endothermic Energy to craft everything they are used in (including all God Slayer and Auric Tesla headpieces).
- This would require defeating the Ice Queen between 16 to 32 times.
- The item is a reference to the Endothermic Fire from Don't Starve, which cools the player. The tooltip is likely a reference to the summer season in the game and when Endothermic Fire is used.