"Only by working together will you defeat the final challenge. From the depths of Icecrown come two of the Scourge's most powerful lieutenants -- fierce val'kyr, winged harbingers of the Lich King!" —Tirion Fordring
I've spent quite a bit of time researching the strategy on this fight and at first look, it does look extremely complicated. It's another one of those fights where you need to split your raid into two groups and proper raid deployment is crucial. First of all, let's have a look at each of the two boss's unique abilities.
Edyis Darkbane: Abilities
Empowered Darkness — Increases damage dealt to Light targets by 100% for 20 sec.
Shield of Darkness — A Shield of Darkness that protects the sister from harm absorbing 250000 damage and prevents spell interruption for 15 sec.
Twin's Pact — The Twin's Pact heals for 20% of their total HP. 15 sec. cast. Begins cast after Shield of Darkness has been cast.
Dark Vortex — Eydis Darkbane beings to cast a powerful vortex of Dark. Channels for 5 seconds inflicting 5850 to 6150 damage every 1 sec for 5 sec. 8 second cast
Surge of Darkness — Pulsing a Surge of Darkness Inflicting 1500 damage every 2 sec to Light enemies.
Touch of Darkness — The Val'kyr's Dark touch has affected you, inflicting 7313 to 7687 Dark damage to players under the effect of Light Essence every 1 sec. The Touch of Darkness will not harm targets with the same attributes as it.
Unleashed Dark — The Concentrated Darkness releases its energies inflicting 12188 to 12812 Dark damage to enemies within 8 yards.
Twin Spike — The Twin Spike inflicts 100% weapon damage and increases damage taken by 20% for 15 sec or for 10 charges.
Fjola Lightbane: Abilities
Empowered Light — Increases damage dealt to Dark targets by 100% for 20 sec.
Shield of Lights — A shield of light that protects the sister from harm absorbing 250000 damage and prevents spell interruption for 15 sec.
Twin's Pact — The Twin's Pact heals for 20% of their total HP. 15 sec. cast. Begins cast after Shield of Lights has been cast.
Light Vortex — Eydis Darkbane beings to cast a powerful vortex of Light. Channels for 5 seconds inflicting 5850 to 6150 damage every 1 sec for 5 sec. 8 second cast
Surge of Light — Pulsing a Surge of Light Inflicting 1500 damage every 2 sec to Dark enemies.
Touch of Light — The Val'kyr's Light touch has affected you, inflicting 4388 to 4612 Light damage to players under the effect of Dark Essence every 1 sec. The Touch of Light will not harm targets with the same attributes as it.
Unleashed Light — The Light Ball releases its energies inflicting 12188 to 12812 Light damage to enemies within 8 yards.
Twin Spike — The Twin Spike inflicts 100% weapon damage and increases damage taken by 20% for 15 sec or for 10 charges.
I've read strategy guides and watched videos from the PTR and this is my advice to tackling the Twin Val'kyrs.
Raid setup
Edyis Darkbane: Abilities
Empowered Darkness — Increases damage dealt to Light targets by 100% for 20 sec.
Shield of Darkness — A Shield of Darkness that protects the sister from harm absorbing 250000 damage and prevents spell interruption for 15 sec.
Twin's Pact — The Twin's Pact heals for 20% of their total HP. 15 sec. cast. Begins cast after Shield of Darkness has been cast.
Dark Vortex — Eydis Darkbane beings to cast a powerful vortex of Dark. Channels for 5 seconds inflicting 5850 to 6150 damage every 1 sec for 5 sec. 8 second cast
Surge of Darkness — Pulsing a Surge of Darkness Inflicting 1500 damage every 2 sec to Light enemies.
Touch of Darkness — The Val'kyr's Dark touch has affected you, inflicting 7313 to 7687 Dark damage to players under the effect of Light Essence every 1 sec. The Touch of Darkness will not harm targets with the same attributes as it.
Unleashed Dark — The Concentrated Darkness releases its energies inflicting 12188 to 12812 Dark damage to enemies within 8 yards.
Twin Spike — The Twin Spike inflicts 100% weapon damage and increases damage taken by 20% for 15 sec or for 10 charges.
Fjola Lightbane: Abilities
Empowered Light — Increases damage dealt to Dark targets by 100% for 20 sec.
Shield of Lights — A shield of light that protects the sister from harm absorbing 250000 damage and prevents spell interruption for 15 sec.
Twin's Pact — The Twin's Pact heals for 20% of their total HP. 15 sec. cast. Begins cast after Shield of Lights has been cast.
Light Vortex — Eydis Darkbane beings to cast a powerful vortex of Light. Channels for 5 seconds inflicting 5850 to 6150 damage every 1 sec for 5 sec. 8 second cast
Surge of Light — Pulsing a Surge of Light Inflicting 1500 damage every 2 sec to Dark enemies.
Touch of Light — The Val'kyr's Light touch has affected you, inflicting 4388 to 4612 Light damage to players under the effect of Dark Essence every 1 sec. The Touch of Light will not harm targets with the same attributes as it.
Unleashed Light — The Light Ball releases its energies inflicting 12188 to 12812 Light damage to enemies within 8 yards.
Twin Spike — The Twin Spike inflicts 100% weapon damage and increases damage taken by 20% for 15 sec or for 10 charges.
I've read strategy guides and watched videos from the PTR and this is my advice to tackling the Twin Val'kyrs.
Raid setup
At the start of this fight light and dark portals will appear. Each player needs to pick either light or dark by clicking on one of the portals. If you pick dark then you can fight Fjola Lightbane and if you pick light then you fight Edyis Darkbane. So before you start, before you even see those portals, have your raid group split into two even groups with everyone knowing what color portal they're going to click on. Dark players do double damage to light enemies and light players do double damage to dark enemies. Players can tell what portal they are aligned with because there is a dark purple sort of aura at the feet of dark players or a white aura around the feet of light players. At almost any stage during the raid, players can and will need to switch colors by clicking on one of the portals of the color they need to change to.
The tanks' roles
There are four portals in the area. There's a dark and light on the left hand side and a dark and light on the right hand side. The light-tank's job is to pull Edyis Darkbane in between the two portals on the left. The dark-tank's job is to do the same for Fjola Lightbane, but between the two portals on the right.
Gas orbs
Through the fight, light and dark gas cloud looking orbs will spawn from the light and dark portals. If you're dark you can and need to intercept the dark gas orbs. The dark orbs won't damage you. When you have intercepted enough dark gas orbs you can unleash a special attack of homing missiles. But if you get too close to a light gas orb you will take damage and a de buff.
The same goes for light players; light players need to intercept the light gas orbs which will do no damage and when you have intercepted enough light gas orbs you can unleash a special attack of homing missiles. But, again, if a light player gets too close to a dark gas orb they will take damage and a de buff.
Twin's Pact
Every now and then one of the Val'kyrs begins a 15 sec Twin's Pact cast and shields himself or the other twin. I am not 100% clear on this yet. From what I can tell, if the light Val'kyr is the one casts the shield then all the dark players need to attack the shield and vice versa.
Vortex
If one of the Val'kyr begins to channel their Vortex, everyone in the raid has to immediately change to the color of the Val'kyr so that they absorb the Vortex damage. After the Vortex has finished channelling, you can switch back.
Here's more info from www.wowwiki.com info but frankly, i found it as confusing as hell!
"Inspiration and strategy
It should be noted that battle mechanic of this boss fight is inspired from arcade game Ikaruga. In that game the player ship and enemies has either white or black polarity (and unlike this boss fight, player can change polarity at will). Only bullets of an opposite polarity can kill the player and the player will absorb enemies' bullets of the same color.
Player's attack deals double damage to enemies with different polarity and when enough bullets of same polarity are absorbed the player can unleash a special attack of homing missiles.
In this fight, Edyis Darkbane is considered black and Fjola Lightbane is considered white and their attacks are respectively white or black. By right-clicking on one of the four portals in the room, you get the respective color of the portal, white or black. You absorb damage of the same color and deals double damage against the boss with the other color. If you are white, you absorb white damage and do double damage to Edyis Darkbane, if you are black then you absorb black damage and do double damage to Fjola Lightbane.
Before the pull everyone gets himself a color. The black-tank pulls Edyis Darkbane between the two left portals, the white-tank does the same for Fjola Lightbane between the two right portals.
Every now and then one of the Val'kyrs begins a 15 sec Twin's Pact cast and shields himself. Every damage dealer has to immediately pick up the casting ones opposite color and burn the shield making the heal interruptable.
If one of the val'kyr begins to channel her Vortex, everyone in the raid has immediately to get that ones color in order to absorb the Vortex damage. After the channel, you can switch back.
During the whole fight its also bullet hell time (the genre of Ikaruga): dodge the other-color balls flying around and catch your colors balls. If your shield absorbs enough damage, you get the Empowered Darkness or Empowered Light buff, giving you a 100% damage-boost against the other color for 20 sec.
With the Twin Val'kyr defeated, everyone is ready to celebrate... when the floor of the coliseum collapses and drops players into the Icy Depths of Azjol-Nerub."
"Inspiration and strategy
It should be noted that battle mechanic of this boss fight is inspired from arcade game Ikaruga. In that game the player ship and enemies has either white or black polarity (and unlike this boss fight, player can change polarity at will). Only bullets of an opposite polarity can kill the player and the player will absorb enemies' bullets of the same color.
Player's attack deals double damage to enemies with different polarity and when enough bullets of same polarity are absorbed the player can unleash a special attack of homing missiles.
In this fight, Edyis Darkbane is considered black and Fjola Lightbane is considered white and their attacks are respectively white or black. By right-clicking on one of the four portals in the room, you get the respective color of the portal, white or black. You absorb damage of the same color and deals double damage against the boss with the other color. If you are white, you absorb white damage and do double damage to Edyis Darkbane, if you are black then you absorb black damage and do double damage to Fjola Lightbane.
Before the pull everyone gets himself a color. The black-tank pulls Edyis Darkbane between the two left portals, the white-tank does the same for Fjola Lightbane between the two right portals.
Every now and then one of the Val'kyrs begins a 15 sec Twin's Pact cast and shields himself. Every damage dealer has to immediately pick up the casting ones opposite color and burn the shield making the heal interruptable.
If one of the val'kyr begins to channel her Vortex, everyone in the raid has immediately to get that ones color in order to absorb the Vortex damage. After the channel, you can switch back.
During the whole fight its also bullet hell time (the genre of Ikaruga): dodge the other-color balls flying around and catch your colors balls. If your shield absorbs enough damage, you get the Empowered Darkness or Empowered Light buff, giving you a 100% damage-boost against the other color for 20 sec.
With the Twin Val'kyr defeated, everyone is ready to celebrate... when the floor of the coliseum collapses and drops players into the Icy Depths of Azjol-Nerub."
If you want to know what loot drops from these booses, here is a complete loot table: MMO-Champion Loot table
Gaming faces 10 and 25 man Twin Val'krys Video Raid guide
