Originally Posted by
Sephiroph
Hey, so I haven't done any rigorous testing outside of a read setting, although I do consistently rank very high as frost DPS. (wwwDOTwarcraftlogsDOTcom/character/us/whisperwind/sephiroph) What I have noticed however is what when using wrists, the extra frost damage you get during pillar pushes the ST damage of KM Frostscythes above Obliterate. My testing for this is simply trying both in a raid setting, and noting that the total damage of the MH and OH obliterate hits are lower than any Frostscythe crit. However, this is only the case while Pillar is up. If Pillar is not up, continue to use KM procs on Obliterate. Further, during Obliteration, odds are you still want to use Obliterate over Frostscythe, even during Pillar, because obliterate will give you over twice as much RP. However, if you are capping on RP during Obliteration and Pillar is up, then you can weave in some Frostscythes.
As to multiple targets, I only start spamming Frostscythe over oblit at 3 or more targets. However, you always use every KM on Frostscythe if you have 2 or more targets, regardless of whether or not Pillar is up.
Again, this is not the result of theorycrafting, but rather the result of rigorous testing in a raid setting with my own gear.