El'Arad, Lord Primarch of Erudin  

Clear the room before pulling El'Arad.

The trick to El'Arad is to remember the 3 Rs. Resists, Right Clicks and Running.

El'Arad casts an uncurable curse periodically which does elemental damage. Having resists about 9k will make the damage easily healer and take some of the pressure of them.

Every so often he will summon little orbs. These need to be right clicked and diffused. If not, they will do big damage to the raid.

Finally, running. There are 3 pillars around the room, and every so often, one will become active, as El'Arad emotes and roots. The group needs to run to this pillar and click the symbol above it quickly. This activates a shield that will prevent the curse from effecting the group members in the area.

If you follow the 3 R's, he is a tank and spank.