Netherspite belongs to the race of Nether Dragons. Once classified as black dragons they were created when abandoned eggs on Draenor got exposed to extreme amounts of nether energy when the planet was ripped apart through a portal. Using his otherworldly powers he fights off any intruder to the observatory.
The fight starts with the Portal Phase and lasts for 1 minute. The portals will ALWAYS spawn in the same locations but might sometimes change color after the first phase. Before the pull everyone should know which beam and order they are tanking. This is extremely important. If and when the buff falls off the raider receives a debuff, Nether Exhaustion, and can no longer tank the beam of that color for another 1m30s. Beam Rotation should be planned out ahead and studied.
As the tank pulls Netherspite to the door, those tanking a beam should move into place.
Red Beam is only taken by the Tank, whose high armor and health allow to be beaten on. The Tank of Red Beam will need to dance in and out of the beam. This is done by taking several stacks and move out so Netherspite gets 5 stacks. After this the Tank must move back in to take another 5+ stacks allowing the stacks on Netherspite to fall off. Following this allows the tank to stay in for the duration of the phase without reaching dangerously low health levels.
Green Beam is often tanked by the other Tank and can be tanked to its full duration of the Portal Phase. Due to its buff it will pose a problem for Pally tanks and shouldn't be tanked by them. Other options would have healers rotate 20ish stacks leaving them with a decent mana pool for when they leave the beam. This can immensely help the healing of the raider tanking the Blue Beam. Rotating Rogues and Warriors is also viable, increasing their DPS. If its a Druid tank, they should start the fight in Bear as they will not have enough mana to shift for the rest of the fight.
Blue Beam is given to a DPS with high health. As they deal more damage from the stacking buff they also receive more and more damage from Nether Burn. Warlocks using Drain Life and Shadow Priests with Vampiric Embrace are great classes for this beam and in most cases can tank it during the entire duration. Otherwise it should be split between 2 each phase when stacks roughly hit 20-30 depending on damage taken. Any class can take the Blue Beam in any situation that the raider assigned dies.
After 1 minute he goes into a Banished Phase for 30 seconds. During this time he will become stationary, Nether Burn and Void Zones will cease and he will begin to target random players to cast Netherbreath. Everyone should spread out and run to the back of the observatory to avoid Netherbreath. If hit with this ability use health pots before running back in at the end of the Phase.
Upon the ending of Banish Phase all aggro will be cleaned and DPS and Healers should give the Tank a second to re-establish aggro. We are now back in Portal Phase. Rinse. Repeat. Receive Epic Lewtz.
Know which beam you're tanking
Dance the Red Beam
Pally tanks don't want the Green Beam
Avoid Void Zones
Know if you're tanking a Beam
Follow Beam Rotation
Avoid Void Zones
One Healer will mostly focus on Blue Beam tank.
Heal Netherbreath victims asap
Avoid Void Zones