So, I was playing with 2 friends level -10 (can't remember so well...).
We entered the champion selection, then a guy wants to be the support, we accept. He picks RYZE (Ryze sup?).
Ok till there, but then he started farming at the jungle (I was like, WTF, this guy is a Ryze support who keeps farming the jungle?), then I (I was the jungler) couldn't level up. Both me and my 2 friends reported this guy, had to be a troll.
That's just a hint if you are thinking on a smurfing : play with high level friends, and with 4 of them, for your team to don't be so noob like mine.