Howdy, would really love a reply. Can't find it in anywhere in the Mall. It's in the armory, but is it obtainable?

Hello. I'm new here and a bit of a Medivh nerd. I just have one question before I jump in: Is it possible to obtain Atiesh, Greatstaff of the Guardian in this iteration of the game? Whether it's through questing/grinding or a cash shop?