Step 1: Auto Attack
Step 2: Keep Auto Attacking
Step 3: realize you have no skill and continue to Auto Attack
Step 4: If you get scared of dying just ulti and run away while spaming all chat how good you are because you are yi and that takes skill somehow...
Step 5: If you win make sure to tell everyone how good you are because you ran in and attacked their nexus after your team took out towers.

First off you probably want to get a tampon because you are a huge vagina that uses a champ that should be retired after level 10
Second you might as well buy some tape to tape your right click down because you are a gay auto attacker
Also buy a lot of attack speed stuff so that you can further rage at anyone with a thornmail
While you're at it buy a douche because your huge vagina will probably start to smell

Yi is gay. I hope you enjoyed my build.

For Tryndy build... just read this again... and xin... and possibly warwick as well.