Archmage Arugal

Arugal was once a member of the Kirin Tor.but when the scourge destroyed dalaran and lots of the wizards died and came back by the necromancers,he fled to Shadow Fang Keep whitch is on a mountain next to Pyrewood village while the dalaran army was decreasing in people Arugal was elected to summon extra-dimensional monsters to help the dalaran people against the Scourge.This brought the Worgen into Azeroth the wolf-men not only killed the undead but also betrayed the wizards.Driven mad with guilt Arugal ran to Shadow Fang Keep and adopted the Worgen as his children.
he still lives there with his huge pet,Fenrus.

Clear out his room before beginning the battle like always when fighting bosses.

Have your ranged classes preferably up against the ledges (if they can attack from there) or at the top of the staircase where you enter the room (if they can't use spells from the ledge).

Tank runs up and starts to get aggro, after a couple of seconds commence dps.

Arugal's main damage comes from his spells, if he runs out of mana he is pretty weak.

If he manages to kill some one he gets 50% of his total MP back everytime he kills some one.

He occasionally teleports around his room (usually one or twice a battle, maybe more if the battle goes on for long). When he does this be catious of attacking him too much until the tank gets back to him as he can kill a non tank quickly.

He usually will mind control one member for a couple of seconds, so be ready for that oo.

Other than his teleporting and mind controlling he's fairly straight forward and easy.

Until, you know, he starts getting farmed by 10- and 25-man raids.