@goodlike10 in PVE, 1 proc maxes out at 25%. in PVP, the 25% gets lowered, so the procs happen less often. you could put more of the same proc, or Master Myth stone(s), but will never be as good as in PVE.
the Cerebral Vortex set says that when you get hit by an enemy, it will cast Torrent on that enemy. it isn't a proc, but acts more like damage reflection. but it has a cool down, so if you get hit 5 times at once, the CV set only casts 1 Torrent to the enemy, then cools down, then casts another Torrent if you get hit again and are still alive by then.
I am getting better at dodging Torrents in the Arena.