Get a F*%king clue riot, build should matter more than champ selection
The game has lost the need for build completely and almost removed skill by making particular champs SO broken the skill needed is minimal. Just look at the examples here.
Warwick - with 50 AP is doing 1200 magic damage, tanks automatically with no items, so just build pure damage life steal and you live. Lets no forget that he has a jump (flash like) ability and also gets speed (ghost ability).
Nasus - As always with Nasus, AFK farm, press Q, build tank. Then you can 1 v 3 with no worries and do huge damage because stacks are WAY to strong.
Darius - Build Black Cleaver, build the rest tank and you will be fine. Just base yourself on that huge true damage ult and ridiculous life gain without a life gain item.
Garen - Pick your build. Pure tank build with black cleaver or still do big damage build with damage items that include HP. Either way he becomes almost un-killable.
Kat - Press R. She is actually a simple fix though, increase the CD her spells slightly and reduce the AOE dmg.
Yasou - Build pure damage, you will auto tank. The only skill needed for Yas is that you can knock=up effectively. If you can do that you get enough life gain with ult that you can 1 v 5. There is a reason he is banned ALL THE TIME.
Akali - Gets huge life gain if you build pure AP you will be fine. As an added bonus, when she is in her invisible circle she cant be seen EVEN WITH A SCANNER.
These are just off the top of my head. The point is simple, build should matter more than champ selection. Until they figure that out the game will continue to deteriorate. Just in case anyone is wondering, I have played this game since it November of 2009 or so and I feel this is the worst game play it has every been. SO champs selection dependent.