Resurfacing until midnight server time on May 31 are Sunken Treasure Troves, in which the Lord of the Sea Hero Attire, Horse of the Sea Horse Attire, and Retinue of the Sea Unit Attire are just some of the items you could acquire.
Available to buy* from the in-game Store, the Sunken Treasure Trove is a new type of Chest that contains guaranteed single items with a significant chance of a second. And the more Chests you dive into**, the more items you will discover!
* The Sunken Treasure Trove is not available for purchase in the Netherlands and Belgium. The contents of the Sunken Treasure Trove are purely cosmetic and grant no competitive advantage.
** You are guaranteed to receive an item from the Guaranteed Items table after opening 5, 50, 100, 150 and 200 Sunken Treasure Troves. Chest out the Chest drop rates here.