IMPORTANT - Only 1 person click chests, books, and cube. Otherwise it will bug final boss.
-If everyone in your group dies in this instance, and no one can rez, you will end up in Everfrost and be unable to complete the instance due to the 1.5 hour lockout timer.
A very small instance with two named mobs + one trash mob giving achievement. Except for the nameds you can invis though all the way. This zone is soloable for Wizards and Conjurors, other classes will have more trouble. This shouldn't be a problem considering how small is the instance. But the trash mobs do repop. The door to the north is locked...
Head to the room to your right upon zone-in and kill a remenant of Miragul (he gives AA but no loot). Once he's dead, check the four boxes until you find a scroll (you found it if you open a chest and nothing happens, then you right click the chest and select 'examine the contents / take scroll' - opening the chest does NOT give you the scroll). If you pick the wrong box a group of 3 level 46-47 single ups will spawn.
Read the scroll and head to the opposite room. Read the book and activate the scrying cube. Again, this can be done invis. This unlocks the passage going North.
Leave the room and head left. At the end of the tunnel a small room with huge glowing sphere can be found. On the other side of the sphere, Sulon McMoor, the first named can be found. He has a very strong attack that can one-shot lower level players, so watch out. When soloing the zone, make sure he can't get into melee range. Sulon drops Master in 1 out of 10, most of the drops are complete trash though.
Once Sulon is dead, click the tome to summon Myrgoth. He won't attack yet. Note that he has two minions which are not part of his encounter. If your entire group stands close to the wall where Sulon stood you can pull Myrgoth without the adds. Click the tome again and he will attack. He's pretty tough, but less dangerous than Sulon in comparison. Should drop Master in 1 out of 3. Normal loot is vendor trash. Once Myrgoth is down you can head out.
Access is from an ice cave in Everfrost near the island that holds the travel globe.