i'll play what i want and feed with what i want
thank you
That's a thing?
Freaking Zed and Azir in Bronze.
Higher elo people need to seriously get off their high horse sometimes. Your good at a video game... slow sarcastic applause
All I can say is that some champs are better in high elo because they require their team to know how to play with them. For example Tahm, Bard, Thresh, Lulu, Zilean, Kayle. Or some who need help/protection from team like Olaf, kog'maw, .. but then these champs tend to have the advantage in low ELO that their opponents don't punish them for their weaknesses enough.
I think that you can climb with ANY champ that you main. Some are way easier than others though. Maining a hard carry champ like Zed will make you climb way faster in extremely low ELO but it'll get very hard once you can't snowball anymore. If you play a more team reliant champ like Janna, the climb in extremely low ELO will be slower, but you'll keep climbing even in those hard ELOs where games are getting pretty even very often.
Upvoted for lizard.
i am not level 30 yet but i am a Yi main 
Can someone tell me what Elo is? I actually made it to level 30 without any idea.