Azir, Yasuo, or Kalista
So I want to buy either Azir, Yasuo, or Kalista. I'm lvl 30 and I want a new challenging champion. I truly enjoy complicated champion with a lot of potential for complicated plays and outplays (while I do realize that possibility exists for every champion). For example, some of my favorite champions include Ezreal, Lee Sin, Nidalee, and Akali. I don't have a particular need for any champ to fill out my role versatility either. Right now I'm leaning towards Azir. Any suggestions??