I've found DoC underwhelming compared to HotW on multi dot fights (where it's been said to be better) due to loss of natures grace uptime and I've been using FoN + HotW on single target fights like Iron Juggernaut, Malkorok and even Norushen and some others because I don't feel there are enough adds to warrant the other talents(dark shaman I also used FoN + HotW as multi dotting the other and dpsing one won't affect what the treants target). On Garrosh I was using Incarnation + HotW but I wonder if Incarnation + DoC would be better there? What are you guys using(I'm especially interested in Garrosh as I felt my dps was lacking on that fight)?
For garrosh I started in lunar and popped incarnation right away to dps garrosh until adds were gathered then I hit CA with 15 seconds left multi dotted a few and the desecration and then used hurricane. I switched between hurricane and double dotting garrosh/desecreation until adds were low enough to knock into the flame. Phase 2 I used incarnation/ca one more time and then saved it for the last push into phase 3 (we didn't end up killing it as we had trouble with empowered minions) but overall my dps was lacking compared to others in the raid. Any tips for dealing with minions would be appreciated as well.