maître yi n'ait pas fait pour la puissance mais pour les dégâts d'attaque

I have personally played with this Yi player and his build. I can Safely say I have seen him get way to many quadra's and a few onofficial penta's doing this with his team scream no don't they will kill you only to see him vaporize the first wound them all then get to alpha again picking up 1-2 more and by this point if he is wounded he is moving to fast to be caught or can simply masterbait and alpha once more to finish the enemies off.

Why so early?

Gold/10 on master yi???? WHAT???

Obvious troll is obvious.

Yi can be built 3 viable ways against lv. 30 players:
-Jungle Ad
-Backdoor Ad
-Straight AP

You really can't go straight AD and lane with him; experienced players will destroy you. That being said, I do agree that you want Lich Bane much much earlier. Alpha Strike + Double Strike + Lich Bane proc does ludicrous damage.

I do like most of your item choices, except for Void Staff. You have no health items at all other than an early ring, and you will need some survivability. I've seen some really nasty Rod of Ages Yi's, but a more standard pick might by rylai's. You don't have any natural CC, why not add a nice slow to Alpha?

Do not listen to her. AP Yi is very effective if properly built I believe you are getting Deathfire's Grasp much too early, and Lich Bane much too late. Lich Bane pratically doubles Yi's Damage. Deathfire's Grasp sure is great to burst 1 person down, but Lich Bane will help you get multi-kills. Hope I helped, and have a nice day!

its just a troll build AP yi sucks tbh :D