I really really really love Unholy. However I'm getting blown out of the water (for the most part) on single target bosses in Mythic due to not efficiently knowing how to use Breath of Singragosa. Ive played a DK for a long time but it just feels weird, foreign, crap up time and like I have no control. Is there a good, up to date guide on how to get the most out of BoS? Also what sources are available to soak for runic power to fuel it on each boss in HFC? Also...until I learn how, does PL+Defile as Unholy end up performing better than Unholy UB/NP or DW Frost PL/Defile?