Boss Name: [b]Yergen, the Usurper[/b] Appearance: Yergen is about the size of a Knight and is completely black. He is also covered in bone plating, several of which extend beyond his limbs. His most prominent feature is a small green flame which engulfs his head. Story Mission: [b]The Dark Throne[/b] [i]Deep within the Hellmouth, A Dark entity is attempting to absorb Crota's now dormant power. Stop him, before he becomes unstoppable.[/i] Story mission details: You Spawn at the Bridge in Crota's End, overlooking 30 or so Acolytes praying (holding those little rocks) in the direction of Crota's Fortress. On the other side are two Hallowed Ogres, and an already open door leading to the Thrallway. Once inside the Thrallway, the player finds that both of the doors are closed and that a Hallowed Wizard protects both, as well as a couple of Cursed Thrall. The player needs to kill both Wizards to proceed. After the Thrallway, the player descends through the opening to where you would normally fight Crota. The area is filled with Hallowed Acolytes praying, and they are all facing towards where Crota would spawn. Behind that area, the Oversoul glows eerily. It will not explode, but is immune to all damage. On the platform where Crota would Spawn, a Thrall named [b]Yergen, the Usurper[/b] eats from a pile of bones and refuse. On his left, a Wizard named [b]Sük Ren, the Broken[/b] watches. Damaging either begins the battle sequence. Yergen will charge you at about twice the speed of a normal Thrall, and is capable of killing players with two melee attacks. Sük Ren will flee towards the crystal room and will act the same as the Deathsinger does, running in circles around the Crystal and attacking the player if they get to close. They both have 100,000 health, so instakilling them is not an option. Their weakness is that once one of them has lost about a tenth of their health, new mechanics are introduced. The first of these new mechanics is preluded by the text "Sük Ren summons a miasma..." In bright red. This will spawn a Wizard cloud on your body 5 seconds later. Afterwards the buff "Sük Ren is weakened" will appear and last for 30 seconds. All damage dealt to her at this time is three times as powerful. The other mechanic involves Yergen, and is preluded by the text "Yergen calls for the Blades". At this time a Swordbearer will spawn, and will also chase you. Killing it will bring up the text "Yergen must regather his strength". He will then begin to run back to the pile he was eating from before. All damage dealt to him is multiples by three until he reaches the pile, at which point damage scaling is brought back to normal. Once both Yergen and Sük Ren are dead, the Oversoul will explode, while the player will still survive. A throne will spawn near the pile, and the player must go sit in it. He will look over his kingdom, I was finally there. To sit on my throne, as the Prince of Bel Air.