Using Frost for most of LFR so far has had me at poor to mediocre dps at best - could never find a powerful enough rotation for it. So specced to Arcane (Changed my fire spec, kept frost) and went from near middle/bottom dps to in the top 3.
There are a few misconceptions about arcane. If you look at Noxxic - WoW Guides & Rankings and www.icy-veins.com they say the same thing - ie to only ever use barrage if your 6 stack is about to drop (due to fight mechanics) or when it’s an aoe situation. The other thing is they say Rune of Power is a must. They also say to only cast Missiles when you got 2 procs to maximize the barrage stack damage bonus. Lastly they say to macro Time Warp with Arcane Power and use it when you got 2 AM charges and a 6 stack.
Well after a lot of testing, the time it takes to position and cast RoP negates any bonus damage so it’s a waste of time. Barrage can be used effectively in all fights and using Incanter’s Ward passive only you can use Barrage every 6 stack and never go below 90% mana. Any bonus from casting Missiles as they say and using Warp with AP is so small it’s also a waste of time. Plus AP is off CD for way too long waiting for that 6 stack/2 AM procs combo to use it, makes it a dps loss.
So having said all that here is my arcane macros. Just finished LFR HoF first part at 77k dps came in 3rd. Actual damage done I was way in the lead with 11.5%, next closest to me did 8.9% damage for the whole run. Note I have no 496 gear yet either.
Hotbar 1 main rotation
/castsequence [nochanneling]reset=5 Arcane Blast,Arcane Blast,Arcane Blast,Arcane Blast,Arcane Blast,Arcane Blast,Arcane Barrage
/castsequence [nochanneling]reset=0.3 1,Mirror Image
/castsequence [nochanneling]reset=0.3 Arcane Missiles
/cast [combat]Arcane Power
/use [nochanneling][combat]10
/targetenemy [noharm]
/swapactionbar 1 2
Hotbar 2
/castsequence [nochanneling]reset=0.3 1,Ice Barrier
/castsequence [nochanneling]reset=0.3 Frost Bomb
/use [nochanneling][combat]10
/swapactionbar 2 1
And for those that don’t like using multi-hotbars here is a one button version. For me everything works but Ice Barrier. For you it may all work.
/castsequence [nochanneling]reset=5 Arcane Blast,Arcane Blast,Arcane Blast,Arcane Blast,Arcane Blast,Arcane Blast,Arcane Barrage
/castsequence [nochanneling]reset=0.3 1,2,3,Mirror Image
/castsequence [nochanneling]reset=0.3 1,2,Ice Barrier
/castsequence [nochanneling]reset=0.3 1,Frost Bomb
/castsequence [nochanneling]reset=0.3 Arcane Missiles
/cast [combat]Arcane Power
/use [nochanneling][combat]10
/targetenemy [noharm]