Shrine of the Storm is a dungeon whose entrance is located in Stormsong Valley in the World of Warcraft game. The level range for the normal dungeon is 110-120. The dungeon contains 4 bosses. The end boss of Shrine of the Storm is Faceless.
After a short speech by Lord Stormsong, Aqu'sirr will finally appear. The tank should tank him where he stands but the boss will eventually relocate elsewhere in the fight zone which will prompt you to move and fight. He'll relocate once and then in the third phase if you can call it that, he'll split into four smaller versions of himself for you to attack. There are no external adds to worry about, just the multiple versions of himself.
The main thing to be worried about is that one of the players will be mind-controlled and turn purple. The mind controlled person should target the large mana balls that appear whilst the rest of the group dps the mind-controlled back to normality.