I've very cool idea, wich is TOTALLY new.
Mind flay crits reduce the cooldown of bender/fiend. I swear its new and it adds a lot of synergies between crit, haste (ehy even powah infusion) mastery with its critted procs! (i actually never noticed if "ghosts tick" from mastery con crit. I guess so, damn MSBT and the wierd way i setted it up).