|Use Time||20 (Fast)|
|Rarity||Tier 5 (Magenta)|
|Material In||True Aeon's Eternity|
|Crafted With|| Makes 1|
(1 Rhodium Greatsword OR
1 Osmium Greatsword)
1 Ice Blade
1 Desert Long Sword
|Crafted At||Demon Altar|
To craft Aeon's Eternity, bring 1 Desert Long Sword, 1 Ice Blade, 1 Rhodium Greatsword OR 1 Osmium Greatsword, and 1 Starfury at a Demon Altar.
Aeon's Eternity, with the addition of a Broken Hero Sword, can be forged into True Aeon's Eternity. The True Aeon's Eternity can be used with True Excalibur to create the Terra Blade, while True Aeon's Eternity is an alternative to True Night's Edge.
- Like the Night's Edge, the Aeon's Eternity is a union of four swords representing biomes: Ice, Desert, Overworld (Pure cavern too), Space.
- Aeon's Eternity is an extremely powerful sword, lasting all the way into hardmode, and doesn't need to be upgraded until one of the mechs have been defeated. Baum used it in his Exxo playthrough.