Aphelios to Grandmaster #10 - High Elo Aphelios Gameplay | Aphelios ADC Gameplay Guide 

It swaps the pick order. You can also swap champs if you both own the two champs!

Thank you for replying, ...so if i Pick aphelios and the other one tresh for sample, does it means, i have to play as tresh? Thing is, i only can play aphelios, i dont really like playing other Champs and aphelios is the only one playable for me... I was forced to Pick twitch and i lost hard, got killed 3 times in 15 minutes, i dont know how to play the other champs Kit + i cant beat players that are lvl 100 + ahead [im still lvl 36] And most players im playing with have so much more knowledge in the game and doesnt understand, or respect this issue im having, lol.

when you swap with them you only swap pick order so when you pick your champs in the game and how some people on your team get to select their champ first that's what you're swapping. you're not swapping champs or roles only the order in which players can first pick their champions. so if you were first pick and wanted to be last you'd ask someone at the bottom to switch so that you can pick last and they can pick first

@@ducklord5105 AHHH, now i get it, Thank you :D