First let it be known that this is like Gigawatts version except with pictures.
Okay when your raid is about to approach the Shade of Aran group up outside the library door. As marked in the red stay in that spot at all times or you risk bugging him. Okay what you do is open the door and have your hunter send in his pet and the door will close behind the pet. The fight will engage and what not. Aran will run through the door after killing your pet so that will be your time to attack him. Aran will still cast his 3 spells, Arcane, Fire, and Ice attacks so have your rogues interrupt him to drain his mana. When Aran goes to cast his special attacks you won't take damage.
Arcane Explosion - You will get sucked to the door, just step back a couple steps and you'll be fine.
Flame Wreath - Be very aware that Flame Wreath can still kill you so DON'T MOVE!
Blizzard - You just stand there until it goes away.
Aran's elementals can and will come through the door as well. So keep the fight up and he'll be down. *After 15 minutes Shade of Aran WILL enrage, spawning different ghost forms of himself, they are not as strong as Shade but can kill you so be wary.
If you pull shade down the ramp he can bug and you'll have to run outside the instance or hearth. THe bug consists of him constantly evading but still casting attacks, it sucks. Also this picture isn't the best, but was the only one I was capable of taking because I wasn't thinking at the time and we're in Zul'Aman now . Thanks for reading!!!!!!!!!!!!