The Everdark, here you will find Shadow Titans, and the Shadow Invaders. Shadow Colosseums will also spawn here. Completing a quest at these Shadow Colosseums will spawn an everdark vault.
Entering The Everdark requires you to go through a Shores of The Everdark Adventure Portals; do take note that these portals require players to have a Power Rank of at least 5,000 or higher to go through.
The Lunar Lancer and all the Shadow based Items originate from The Everdark.