I updated the first post to include the new rotation. I am reposting here for simplicity' sake and to avoid redundant questions about what to do. This is taken directly from Kavan.
Your rotation should mostly look like this:
AB AB AB abarr
if mbarr procs during AB, then your rotation should be:
AB AB AB mbarr abarr
if mbarr procs during abarr, then your rotation should be:
(abarr) mbarr abarr
There is an exception case to the above. Assuming you have infinite mana, theres one better rotation. You must still obey the above rules though:
AB (3 stacked spammed until mbarr proc) mbarr abarr
(please note: the rotation does not include ramp-up time because that should be covered by the other rules listed above. This rotation begins with the AB debuff already stacked 3 times)
While it isn't said directly in the above, if you get an mbarr proc during the 3rd AB (and that you do not have the time to react to it), then your rotation will end up being:
AB AB AB (mbarr proc here) abarr (since you had no time to react) mbarr abarr
<Eej> YOU"RE GONNA PULL
<Eej> IF YOU SQUEEZE OFF ANOTHER ARCANE BLAST
<Spectear> You've obviously never played with Manly.
<Spectear> That's hardly a reason to stop DPS. Very Manly Staff
Kavan, what assumptions did you make to get those rotations?
Assumptions are roughly my gear, molten armor and using the procedure outlined in the dynamic cycles thread to find the optimal cycle pair at 300 mps barrier. Another assumption in the modeling is that this is in unhasted situation. So the optimal cycle pair for hasted situation will very likely be different.
Now that it's confirmed glyph will be hotfixed again I'll run the numbers again with the fix and I'll do them at several mps barriers to get a larger range of cycles.
From what I can tell from rawr, Missile Barrage and Arcane Barrage are just awesome, with MBAM being better than ABar.
Arcane Blast is average, but ramping it up is the best option as filler. If there's ever an option to take a zero-stack ABar or MBAM over starting the AB stack, take that option. If that option isn't available, then ramp to three then ABar or MBAM.
There are also some interesting things happening if mana is ever limited. Rawr wants me to cast as many AB*3 as filler. And then if that runs me out of mana too quickly, downrank to AB*2 as filler until I'm back at zero mana by the end of the fight.
I just tried out the rotation [Arcane Barrage]x3 -> [Arcane missiles] -> [Arcane Barrage] trying to clip the 4th missile with Arcane Barrage but it appears that when i cast Arcane Missiles, the Arcane Blast buff is consumed by the 1st missile which activates the 60% damage increase for the missiles but Arcane barrage does not benefit from the 60% damage increase anymore.
If this is the case, what would the next best rotation be besides spamming Arcane Blast?