has a high skill cap and is prone to getting a few bugs every now and then. Mastering him can benefit you greatly, but it will take some time and his win rate is less than favorable. I would personally pick someone easier until your game and mechanical knowledge is larger, since the basics of Azir compared to the basics of other champions tend to be more ''difficult''.
[Insert sassy dragon here] is going to be picked at almost every opportunity when he is released and possibly banned at every opportunity if he is too strong, so you would have to be quick about picking him. I would suggest you keep your IP at hand until he is released to see what you and other people think about him on his release stats.
is pretty solid and well balanced champion, and I don't think you can go wrong with him if you enjoy mage champions. He is also a part of the mage update so he may get some cool changes in the future...or terrible ones.
Save your influence points for now and try to resist temptation.