|Tooltip||Place in the Eternia Crystal Stand to summon Etheria's portals|
- Internal Item ID: 3828
The Eternia Crystal is an event-summoning item. When used in the Eternia Crystal Stand, the Old One's Army event begins. The Eternia Crystal is purchased from the Tavernkeep for 25 (pre-mechanical bosses), 1 (post-mechanical bosses), or 4 (post-Golem).
- Players may wish to stock up on Eternia Crystals before defeating the mechanical bosses, in order to save coins.
- Due to the price increase, it is possible to buy Eternia Crystals beforehand and sell them after the battles, netting a total profit of 55 per crystal (This no longer works on desktop; the price you sell the crystal for is based on the price you bought the crystal for regardless of which bosses you have defeated).
- This is not possible on the Nintendo Switch version; they sell for 5 even post-Golem.
- Desktop 18.104.22.168: Name changed from "Elder Crystal" to "Eternia Crystal".
- Desktop 1.3.4: Introduced.
- Console 1.17: Introduced.
- Switch 1.0.1096.2: Introduced.
- Mobile 22.214.171.124.0: Introduced.