knockback(good for peeling, especially with leapers), high ranged dps, ability to take off dots, cc's... Not sure if serious.
Trolling Mara right here!
But seriously, are you one of those pvpers that think they are all that becuase you tear ppl down with your mara/sent that take almost NO skill? LAWL
P.S. Yes, ive played as a sent in 50 pvp and i forgot how easy it was to kill with em, but seriously I still pvp with my commando cuz I have no respect for Sent/Maras (except the ones that really HAVE skill)