Does anyone actually KNOW why Zed has bonus AD on W?
Yasuo has bonus crit chance to get people to build Infinity Edge and Statikk Shiv instead of bruiser items.
Riven has her passive and lag canceling to raise her skillcap so that she's not totally faceroll. She still feels faceroll when you die to WAAQAAQAAQAAR in the space of 1 second, but at least you know she was technically skilled.
Ahri has (soon to be had) low base values and a damage amp on Charm to force her to actually land Charm to kill people, instead of killing them with W, R, and point blank Qs. Fizz is getting a similar damage amp on his ult next patch in the hopes of forcing him to actually ult people in order to kill them, but because they didn't actually hit his E, W, or Sheen synergy it'll probably just make his burst even more hilarious without actually making him hurt less with his current combo.
The pattern here is that with all of these champions with some kind of free stat boost or damage amp, I can explain why they have them and have it make at least a little bit of sense. Hell, some of these are actually Riot's explanations from old patch notes or comments.
Can anyone actually explain why Zed needs free AD from his W? I mean, if he wants to kill people ridiculously quickly as an AD champion, shouldn't he have to build items with lots of AD (Infinity Edge, Hydra, etc.) instead of BorK (30 AD) or Youmuus (a similarly pitiful amount)?
Champions who have their damage budget concentrated into two spells are usually more powerful early and mid game and tend to be a tad weaker in the lategame.

