I usually always start off a fight by shield lobbing first target, then my silence and aoe damage spell. Then I flash 2-3 times and start in on rage of halone sequence. Once I get one full RoH seq. off I start doing fast blade on main target, 2nd ability on 2nd target, then halone on main target. You can change up the mob you target with the second ability so you generate good threat all around, but always halone the Main target as it needs most threat.

Sorry on my phone so can't recall all skill names right now. Good luck!