Posted by Hikaru

Just search league of legends', and clash of clans' ranking systems if you can't understand what I am saying/trying to say in a simple way.

Not entirely sure how elo works in league, but I heard it is similar to clash

Clash: you are in leagues, and depending on how many stars you get against someone else's village you get certain amount of trophies(also based on opponent's town hall level/league)

You need a certain amount of trophies for each league, and rank up/fall according to your trophy count.