Future Northrend Instances 1 by Zlmodlor.
After many long battles, Yogg-Saron was finally defeated and his corrupted guardians of Ulduar were destroyed by the brave adventurers from around Azeroth. The world relaxed, knowing that the Old God is finally dead. Now, they can focus on the Lich King. Preparations were made and troops were advancing to the Icecrown Citadel.
However, little did they know that Yogg-Saron is not really dead. No one could have known that the Forgotten One was part of the Old God... Nor could anyone know that it survived its encounter with Arthas and Anub'arak. As the Forgotten One was part of Yogg-Saron's body, the Old God quickly transferred his mind into it and severed ties with his old body before the adventurers dealt the final blow. Now, weakened, with all his servants dead or freed from his mind control, Yogg-Saron sought out the last of his loyal subjects, the Twilight's Hammer Cult, instructing them to make preparations. Other additions to his army included the legion of Faceless Ones that the Forgotten One controlled and a 10,000 year old evil: Lord Xavius.
Yogg-Saron used the last of his powers to summon Xavius out of the Maelstrom and ressurect him. Xavius then pledged his loyalty to him, in gratitude.
Soon, Dalaran sensing the emnations of dark, volatile magics seeping out of the underground caverns of Azjol' Nerub, quickly realised that Yogg-Saron is back. And this time, there will be no more failure on his part... The Kirin Tor are seeking more brave adventurers to enter the old God's new base, in the recently discovered depths of the Inner Kingdom of Azjol' Nerub.
Two new instances!!