Broken yi Q and ult

just played with the new champ on summoners rift and Master Yi was on the enemy team, he went 26-9-7 in a 30 minute game. its really ridiculous how he has almost no counter play, can tower dive, still and dodge all damage with his Q, get a kill then Q again and again. Taking almost no tower damage for tower diving nexus pretty much solo. Can you please stop nerfing the ability for people to carry the game while still allowing this champion to have broken mechanics which he can abuse and carry with. How can anyone counter untargetability that has a reset and then an attack speed/ movement speed steroid. It cant be that hard to realize this, unless of course you're altering a game you never play. There shouldn't be a very select few champions that have the ability to carry while you nerf the ability of most others. this is the bug i'm reporting.