Tip for the new draft

I played a game yesterday with someone who didn't realize the purpose of swapping champions in draft. Allow me to explain in case someone else is confused.

In draft you are allowed to ban champions to keep your enemy team from having the option to play them. If you are at the bottom of the board as adc and someone like support is at the top and they plan to play a very common champ that you have you can ask them to select your champ if they have it and then swap. This will prevent the likelihood that the enemy team will be able to choose that champion before you. Work with your team. If you can keep a heavy pick from the other team then do it.