Is it needed if you don't want to do the most bleeding edge content? I got my ninja to 80, got him the 510 crafted stuff, and that is as far as I plan to go gear wise, save for his relic daggers. Do I need to matria him up for basically roulettes and the rare as rocs teeth raid I do? If I do what do I use? I am told all crit and nothing but crit.