which champion should i buy
i equally enjoy all roles, and am having a difficult time decidinng which champion to buy, what are the pros, cons, playstyles etc. of these champions. 
4 Comments
Pros:
-Not permabanned -Litterally OP -People get punished for doing any sort of damage to you
Cons:
-Skinny arms -I'll hate you if you play this champion
Irelia. She's OP but totally ignored which is exactly what you want in a champion.
If you want a champ who can go into any role, then go Kayle or Cho.
Of your choices, lux, zac, and irelia are the best as they are good and not that hard to learn. Riven needs you to main her for 250 games while tilting your entire team the whole time. Draven is kind of hard to learn as there aren't many champs like him and you have to be able to last hit while catching axes.
Irelia