The chandeliers will not attack unless they are attacked first

The lair is much the same as Onyxia's lair in that you have a few wow gold guards and then the boss fight. When you enter the room with Magtheridon, you will see him being contained by five chandeliers.

The chandeliers will not attack unless they are attacked first. There are three phases involved in the boss fight, and the chandeliers comprise the first.

You will want to make sure that the patrolling guards that are not in Magtheridon's room are all killed before engaging the chandeliers.

Hellfire Warders - The warders have five abilities:

1. Shadow-bolt Volley: A spell with cast time that can be interrupted.

2. Rain of Fire: An AoE instant cast can be avoided by moving away from the fire.

3. Fear: Same as the warlock spell, will fear a target.

4. Death coil: Also like the warlock spell.

5. Shadow-fury: Lowers the threat of the target.

These will need to be dealt with before the boss fight because they will path into the boss' room and be aggressive during the boss fight. The fear of him breaking free and being allowed to have his way with Outland is what sends you to his lair to destroy him.