The Forge of Souls is the first instance in the group of three that make up the Frozen Halls in Icecrown Citadel.  These three new instances were just added in the 3.3 patch that added all of the Icecrown Citadel content to the World of Warcraft.  You must complete them in order to open up each of the next two. Once The Forge of Souls has been completed you will be able to move onto the next instance in the Frozen Halls.  This is so that you can see and follow the storyline involved in the three instances as it evolves.

The worst of the Devourer of Souls abilities is Mirrored Soul, which is cast quite often, or at least it seems like it.  As soon as you see it then all DPS must stop and wait until it expires.  A well geared group will kill the affected player in no time flat if they keep DPSing, and no matter how good the healer is they will not have a chance to keep the player alive.  Once the effect ends start back in on the boss.

Join Byron "Messiah" Mudry as he walks you through the Forge of Souls.