Originally Posted by
Alroxas
The problem is that Arcane is incredibly RNG dependent for damage output. Getting procs of AM (which lead to procs of 4pc) and Doom Nova procs on the right target greatly affect your DPS especially on the opener.
One thing I did find useful is to have macro AM so that it will channel AM to the focus target (boss with Doom Nova) with a modifier (i.e. ctrl) and channel AM to the primary target without a modifier. This way you can have the best of both worlds of being able to burn AM on the boss (w/ doom nova) without having to target switch.