Nice! I tried Skorpyron back one or two months ago kiting him and avoiding his cleaves with Blink, but I didn't have enough damage to deal with the adds effectively. And I probably wouldn't have met the DPS check anyway.
Out of curiosity, how do you pull all the small scorpions? I've tried standing still where they spawn, but it takes time for all of them to aggro and become targettable, while I generally just die to all the melee hits/debuffs before that can happen. Else, surely more Living Bomb damage helps meet the DPS check assuming that you still need only 1 Bomb, 1 DS and 1 Flamestrike to deal with all the small scorpions?
PS: Do you plan on trying Krosus? Right now I am wondering if you can use Blazing Soul for him - if Krosus' melee range is less than 8 yards (and I suspect it might be, 8 yards is actually pretty far), then you can stand there and comfortably outheal his AoE hits. It definitely helps that they're physical damage and therefore reduced against Blazing Barrier.
(I'm also wondering if that can work against Garothi Worldbreaker, but a cursory arithmetical check suggest not yet even assuming boss can't hit you from ~8 yards)
If that doesn't work, maybe Eonar or kiting Trillax/High Botanist/etc. in Nighthold assuming they move slow enough?
PPS: Also, does anyone know exactly how fast Varimathras moves? I was thinking that if he moves slowly enough and if his tank swap ability has a range and if you have enough mana regeneration, you can kill him as Arcane by kiting him and constantly re-applying Prismatic Barrier after each Alone in the Dark hit (at normal it would be enough to cover it if you get a relic or two that boosts PB amount). Extremely long-shot, but I was wondering. Videoes online seem to suggest he moves too fast for this, but I wasn't sure.