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This instance is where you can release and speak to the true Lady Vox. It is located in Permafrost and accessed through the Fire and Ice quest.
To spawn an angry Vox, just have any 1 person click the altar in the room. This will kill them, but the Spirit of Vox will spawn with 2 seperate groups of adds. These can be pulled seperately, so do so and kill them. Each time a group is killed, another group will spawn in it's place. Supposedly, this will happen 3 times for each group (so you kill a group, get a respawn, kill that, get a respawn, kill that, get a respawn, kill that and then nothing... so 8 total groups to kill).
Once the groups are down, the MT group charge the Spirit of Vox. Your MT needs to turn her and have his back to the wall, so her back is to the rest of the raid force. Vox's tail is a bit buggy, so be careful or you may get stuck on it. Also, it is advisable to have a group cure elemental in every group, or carry cure elemental potions. You should use the information provided about her AOE's to have your DPS joust in and out whenever possible, or just get them a crazy cold resist, have your AOE cure elemental healers ontop of things and eat the AOE.
Congrats on your new Vox head for your guild hall!