SG Jinx: Nearly doubled base damage on ult despite having a fine winrate and playrate.
I checked. Jinx's ultimate was buffed in patch 6.17. Her Star Guardian skin was released in 6.20.
However this statement of yours is just plain wrong. First of all, the base damage wasn't touched. The bonus AD ratio was buffed by 50%. Doubled base damage huh?
Championship Riven rerelease: Nearly doubled base damage on ult on a champion that is already broken.
Two things. One Riven isn't broken, you just don't know how to beat her.
Two, while the patches are similar (6.17 to World's 6.18(ish)), once again you overblow the buff to make a poor point. A lvl 18 riven doing 200 instead of 160 damage is nowhere near doubling the damage. Even at max value, the damage is increased from 480 to 600. That is a 25% increase.
Project Ashe: Ashe becomes pick or ban, Riot "fixes" her by nerfing the mana cost on her W and the damage on her ult (both of which did, you know, nothing)
This has bloody nothing to do with the skin. The skin didn't magically make her strong. The skin only made her more popular so that people started complaining about her strength. Plus you mentioned that Riot nerfed her in that patch. So how are they buffing her for skins in this instance?
Elementalist Lux: All kinds of random buffs over the last year or so that she didn't need, and then some more after her skin was released, redoing her VO, all that.
She got a passive buff, a Q nerf, a E buff, bugfixes, and an ult buff. What makes you think she didn't need them? She had a sub 50% winrate all that time, and she still does. And how does a VO update make it into your list of "buffs"?
Lee: Pretending for YEARS that he's fine, but recently admitting he's broken, but also won't get nerfed because he makes money -- and then turning around and giving him a legendary skin right after saying that.
I ain't touching that.
Why do you feel the need to lie to prove a shaky point?
Lying to fellow boards members isn't illegal, but it doesn't help your point if anybody bothers to fact-check. :/