After reaching level 1000 you can begin to gain legend tokens by completing the legend dungeons. These Legend tokens can be used to gain the legend sets of armor from Elwick and weapons from the Keeps in the Battlefield realm.
Legend Historian
Elwick can be found at Elwick`s House of History (53, 41) in the Royal Hollow realm.
When you click on Elwick you will see a screen with a bunch of different options:
Legend Dungeon Keys
The key you gained from Elwick and the keys you later gain from completing the dungeons can be used as teleportation devices to teleport to the location of a dungeon.
Use the Inventory > Containers > Keys screen to teleport to the location of a dungeon once you have a key.
Redeeming Tokens
After successfully completing a dungeon you will unlock a series of rewards on Elwick`s reward screen you will notice that the more dungeons you complete the more rewards become available this is intentional and requires you to actually do a lot of the dungeons before all of the rewards are available.
The reward screen itself gives you a list of all of the items that you can gain and when you click on a reward you can then turn in some of your legend tokens to gain the reward.