Harbinger Skyriss Abilities

1. Clone will occur at 66% and 33% health, this will clone Skyriss, if you don't kill the first one fast you will have to kill both.
2. Dominate is a random mind control.
3. Fear is cast on members in melee range, if there is only the tank in melee range then that player may be feared.
4. Mind Rend stuns the target for 3 seconds, dealing 1,250 damage a second.

Harbinger Skyriss Strategy

1. The encounter will start with either a Blazing Trickster or a Warp Stalker, dps either one that spawns as fast as you can.
2. The second orb will contain Millhouse Manastorm, an awesome gnome mage who will help you fight, healers should make sure he stays alive, he does nice damage.
3. The third orb will spawn Sulfuron Magma-Thrower or Akkiris Lightning-Waker. Sulfuron will cast a curse that reduces healing by 50%. Akkiris will curse a party member, increasing damage taken by 100%, also has a self buff which reduces damage taken by 50%, this can be dispelled or purged. These curses need to be removed by a mage or druid.
4. Finally the forth orb will contain Twilight or a Blackwing Drakonaar. Blackwing Drakonaar is the one to be worried about. Blackwing Drakonaar does an AoE knockback dealing 3,000 - 9,000 damage and a mortal strike which lasts 6 seconds. Kill either down and finally fight the boss.
5. Mark Harbinger Skyriss with a raid icon, this is used to identify the clone, which will occur at 66% and 33%. All dps should switch to the clone and kill them as fast as you can, if you do not kill the clone fast enough both will be out at the same time.
6. The dominated person should be slowed by other players to avoid them from dealing damage to the party.
7. There should be a player other than the tank in melee range to avoid the tank being feared.