= new reply since forum marked as read
that looks like the old zon Multiple Shot from D2 - the beta cap was at lvl 13 and I only made it to about lvl 10 for the Demon Hunter so didn't get to use or see MS.
I read your post that you weren't able to get in 
and here it was you who let us all know about this.
My neighbour wasn't able to download it completely for some reason so he wasn't able to partake either. (He's such a hardcore lover of Diablo, I never thought I'd ever find anyone who was crazier about it than I, but voila, he is right next door. I wonder what the other neighbours think when they hear us talking excitably, over the fence, about barbarians and magic finds. haha) The d/l worked for me fine and was able to log in after many many many attempts on Saturday. Sunday was a much better day to get in game, I suppose they opened up more space on that day.
I am at the minimum system requirement with my mac so at times it was pretty slow going for me - but overall it was a blast of a time. I met my daughter there and another friend from another rpg and was trying to get Neoma to come on by but I think she was having vid card probs.
I have always had a soft spot for archer/amazon types so am probably going to start of with DH, but I do waffle sometimes between that and Wizard. waffle waffle.