Netherspite

Introduction :

Netherspite is one of the optional boss in Karazhan. He will require specific attention though. Your raid needs to be perfectly organized and will have to respect a very sharp timing. Perfect concentration and coordination will be key in your success in this challenge.

Attacks and Abilities

The portal phase is the first of Netherspite's two repeating 1 mn phases
The banish phase will last for approximately 30 seconds. During both phases, Netherspite will use the following abilities:

Nether Burn -
Description: aura type spell that deals 1200 Shadow damage every 5 sec, towards everyone LoS (line of Space). This ability can be partially or full resisted.
Solution: Make sure Priests buff shadow protection and Paladins use their shadow resistance aura. There not much more you can do about it except heal through it.

Void Zone -
Description: Opens a massive void portal that lasts for 6 seconds. It appears as black circles inflicting 1000 shadow damage per second while staying through them. It is similar to the void zones found in the Four Horsemen fight of Naxxramas, or Zereketh the Unbound in Arcatraz.
Solution: Don't stay in, move out of the affected area as soon as possible.

Berzerk
Description: After 9 minutes, Netherspite will enrage right after the 6th banish. Enrage increases Netherspite's physical and magical damage by 400%. At this point, the raid has less than 10 seconds before Nether Burn kills off the entire raid.
Solution: kill him before the end of the 9th mn or 6th banish.

Portal Phase Details
The Portal Phase lasts 60 seconds. Each time this phase begins, three portals will immediately spawn. After approximately 10 seconds, these portals will begin emitting a beam of one color. The three different Nether Beam targeting Netherspite are produced simultaneously from three nether portals placed semi-randomly in the room. The beams will hit Netherspite or the first player standing between him and the portal. The beam effects stack each second (up to 50), and there are 3 colors (see below).

The portals will spawn at the same locations every time, however, it is possible that they will change color after each banish phase. In effect, what might be green in the first portal phase might be red in the second. They do not have to change color; they merely can.

Once a buff "ticks out" (player leaves the beam long enough to lose the debuff - 8-20 sec, or uses a shield to dispel it), another debuff is applied to the player called Nether Exhaustion, which prevents him from intercepting that color beam for the next 90 sec, thus a rotation for each of the beams is required. A listing of the beams' abilities follows:

Perseverance
Perseverance is the red beam commonly referred to as the "Tank beam". Perseverance lasts for 20 seconds after the player leaves the beam. Should it hit Netherspite, damage dealt to him will be reduced by 1% per tick. Should it hit the player, the following will occur:
- Netherspite will aggro you. Guaranteed.
- Damage taken is reduced by 1% per tick.
- Defense rating is increased by 5 per tick.
- Health is modified - the first application adds 31,000 to the player's maximum health, with additional stacks reducing maximum health by 1000 per stack.

A relevant note for this beam is that every time the portal phase begins, Netherspite deals twice his normal damage, making Perseverance required to begin tanking Netherspite after the banish phase.

Serenity
Serenity is the green beam commonly referred to as the "Healer beam". Serenity lasts for 10 seconds after the player leaves the beam. Should it hit Netherspite, it will heal the dragon for 4,000 health per tick. This stacks to 8,000, then 12,000, and so forth. It is very crucial to not to allow Netherspite to be hit by this beam. Should the beam strike the player, the following will occur:
- Healing done is increased by 5% per tick.
- Spell cost reduced by 1% per tick.
- Maximum mana reduced by 200. Stacks up until your total mana pool reaches 0.

Dominance
Dominance is the blue beam commonly referred to as the "DPS beam". Dominance lasts for for 8 seconds after the player leaves the beam. Should it hit Netherspite, his damage will increase by 1% per tick. Should it hit the player, the following will occur:
- Damage dealt is increased by 5% per tick.
- Healing received reduced by 1%.
- Damage taken by spells is increased by 8%, which includes the AoE Shadow aura which Netherspite has.
A pertinent note is that the blue beam will only appear behind or to the right when entering the room, and never on the left. After 60 seconds of this phase, Netherspite will "banish" himself.

Banish Phase Details
This phase of the fight will last for approximately 30 seconds. While Netherspite is banished, he will mostly remain stationary, while also remaining vulnerable to damage. However, he still has the ability to melee players who come too close for his comfort. Netherspite will random fire a Netherbreath, which will usually hit 4 people in the raid. It also has a small knockback.

After 30 seconds, Netherspite will unbanish and begin attacking the person with the highest aggro, or whomever is in the red beam. Note that the banish phase can last a few seconds longer than 30 seconds if he's in the process of casting Netherbreath.