Eternia Crystal

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 (pre-mechanical bosses),  (post-mechanical bosses), or  (post-Golem). The Discount Card and have no effect on its price.

Tips

 * 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 per crystal.
 * This is not possible on the ; they sell for even post-Golem.

History
Cristal Eternia 埃特尼亚水晶