We got our first kill on this guy last night! I put this up at my blog too, but figured this might help someone working on the fight.
http://shadow-raid.blogspot.com/2012...or-heroic.html
Granted this was only 'lol10man', but I felt it was quite difficult. Especially when you are the ONLY DPS assigned to killing 1 spark that keeps moving progressively faster each round... Its a lot of pressure and timings were really close. If even 1 person misses a GCD or slacks on DPS and a spark gets through, its as good as a wipe.
In order to consistently push killing 4 sets of sparks each time, I had to get a little creative. Here's some things you can do to help be most effective on this fight:
Phase 1 notes:
-Your dispersion is a great ability to soak one of the big adds exploding outside the ring.
-Twist of Fate is nice on this fight for the insane DPS boost it provides with all the adds to kill.
-My main DPS focus was the boss, while keeping dots on the big add. Smooth damage on the big add I think helps the tanks with timing on bringing it outside the ring. Spiky damage makes it more difficult for your tanks.
-You can time Halo to hit both the boss and the add in the sweet spot more often than not.
-I was resetting my stacks as the add hit ~50% each time.
Spark Phase notes:
-Reset your stacks after the last big add explodes, and run to your assigned pillar location. This is a great time to use Body and Soul via PW:shield for a 60% speed boost to get there quicker and resume rotation. I reset my stacks again before the spark spawned to make sure I didn't take too much damage.
-Keep VT and SW:P on the boss, and DO NOT use your Mindblast, Mindspike, or DP on the boss. You want to save these for the spark each time. Ideally, you would have 2 instant Surge of Darkness procs for Mindspike, then use an instant Devouring Plague if at 3 orbs already, otherwise use your instant Mindblast first. Don't hesitate to use a 2-orb DP if you need it and have nothing else available. Try and always get a SWD off for the extra orb generation.
-Between these instant abilities, I rarely cast a VT on the adds. I would often get a SW:P out since its instant and does damage the moment you cast it.
-reset stacks after each add dies and resume mindflay, VT, and SW:P on the boss, instantly targeting the new spark when it spawns.
-Halo is nice to use for these too, but use it right as the adds are spawning or not at all.
-We found it necessary to get 4 sets of sparks, and then burn the boss ignoring the 5th set of sparks.
-We assigned 1 DPS to each pillar. The goal is to get all 6 pillars to die at about the same time, so while multi-dotting is possible, your raid leader may not want you to if it will skew the kill timing.
From here its back to phase 1 again, then back to the spark phase, and then into the final phase.
Final Phase (kill):
-Be ready to use your Vampiric Embrace for when raid damage gets high.
-We found it best to stack behind the boss and burn while rotating raid cooldowns -- no resetting stacks.
These are the things that worked for us, but YMMV.