ENCOUNTER 4: THE VAL'KYR TWINS
Tirion Fordring: 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!
Before I start the actually summary of this fight, I'll pose this question: Have you ever played the game Ikaruga? Yes? Okay. Because this fight is Ikaruga.
For those not in the know, I'll break it down.
Eydis Darkbane and Fjola Lightbane are each one color, Light or Dark. The Val'kyr will turn members of the raid Light or Dark as well.
Dark Essence -- You have the Dark Essence! You absorb Dark damage, deal less damage to Dark targets and deal bonus damage to Light targets. Absorbing Dark damage can cause a Surge of Speed!
Light Essence -- You have the Light Essence! You absorb Light damage, deal less damage to Light targets and deal bonus damage to Dark targets. Absorbing Light damage can cause a Surge of Speed!
Absorbing Dark or Light damage brings up your buff stack, and when it reaches 100 you proc:
Surge of Speed -- Increases move speed by 50% for 10 sec. Stacks. (0 yd, cast: 0 seconds
I'm unsure why this speed boost is necessary, but it must mean something. There are a ton of spells that talk about summoning Light or Dark "Bullets", which makes me think of Ikaruga even more.
The twins have a number of attacks and dual spells, like:
Twin's Pact -- The Twin's Pact heals for 10% of their total HP.
Power of the Twins -- The shared power of the Twins increases Physical damage dealt by 20% and allows the Twin to Dual Wield for 15 sec.
Val'kyr Quickness -- The Power of the Twins increases attack speed by 10% for 15 sec. Stacks.
There's more, too! A pair of void zones that each deal Dark or Light damage, on the fly switching of colors, a spell that allows damage to be shared between the sisters ... it seems like a crazy fight. Like Thaddius 2.0. You'll be attempting to DPS whatever Twin is your color opposite, though, is the heart of it. Oh, and don't kill your raid members of the opposite color.
With the Val'kyr twins defeated, everyone's ready to celebrate ... when the bottom drops out of the Coliseum and drops you the challengers into Naz'anak, the Forgotten Depths.