need to have enough DPS

That’s all there is to the fight. Keep in mind that you need to have enough DPS to down him quickly as you only have 5 minutes before he enrages and starts one-shotting players. You do not need a huge amount of DPS though since he only has 2.3 million health in 10 player raids and 10 million in 25 player raids. If all DPS players are above 2,000 DPS each you will have more than enough to beat the enrage timer.

Emalon the Storm Watcher
Emalon the Storm Watcher is a boss in VOA that is accompanied by a group of four guards called Tempest Minions. These guards respawn whenever they are killed, therefore DPS should not be wasted on them other than when required. Instead they are simply held by the off-tank. Emalon himself has a few abilities that need to be watched for, while the guards’ main ability is to explode when overcharged.

Emalon’s Abilites
Chain Lightning – This spell hits the target and then bounces to additional nearby targets increasing the damage it causes to each subsequent target.

Lightning Nova – This is an AOE damage attack that Emalon casts roughly every 20 seconds. It hits everyone nearby for a large amount of damage, and will wipe most non-tank players. The damage it causes is maximized if you are within 20 yards of Emalon. Lightning Nova has a long cast time though, so melee DPS has a plenty of time to get away.