Riven Nerfs need to be reverted ASAP
Riven was and still is one of my favorite champions but this season its practically impossible to make her work. Her ultimate has been overnerfed to the ground especially considering that these nerfs where meant for season 5 which they still hurt a bit but i guess they weren't that gamechanging. This is what riot said regarding the nerfs:
Riven's a champion that's equal parts impressive and frustrating when she succeeds, turning the battle lines into a blur of knock-ups and danger pings, leaving her opponents without many options. For a champion whose 3 basic abilities are so powerful on their own, Blade of the Exile's cooldown's always been finely tuned in concert with her access to cooldown reduction. Now, however, with the growing popularity of things like cooldown runes and The Black Cleaver, it's never been easier for Riven to hit the 40% cap and start breaking the laws of physics.
Increasing the cooldown of Riven's ultimate won't move the needle too much once she reaches that point, but stretches enough of her engagement window to make a difference in the skirmishes and scraps Riven's face along the way to make-or-break her snowball.
After this when season 6 came out : #1 Brutalizer removed <--- This small item gone hurts her waaaay more than you might think. #2 Black Cleaver cost increased #3 CDR boots - 5% #4 No 5% CDR in masteries, (You could go Cunning masteries but dont think its worth losing all the damage)
Games now are much faster than ever and games are usually snowballing out of control way before you get lvl 2 ult yet alone get the items for CDR cap. Previously runes, boots and brutalizer were the only items needed for cap, therefore the nerfs which is understandable. This season you need a whole item which is really expensive (Black cleaver) and boots or if you don't like going black cleaver you need boots, a whole item and yet another small item to reach cap. That's like 3000+ more gold than you needed before for cap. And as if all this wasn't enough, you delay your most core item (Ravenous Hydra) which is also nerfed a lot and more expensive than before or you can choose to rush it and play the game having a 130 cd ult, while champions like irelia are way stronger without even considering her ult but hers is ok to be on a 70 second CD.
Riot might be planning something for her since we see a +1 health regen to her on pbe, which is basically meaningless and needs way more than that. Even in season 5 she wasn't that strong, a lot of people complained about her being OP especially the lower elos just because of her outplay potential and sometimes 1v2 early on but that whats she needs to be relevant later on. Her winrate back then wasn't anywhere near the 55%'s you see right now. It was perfectly balanced at around 50% and now its close to even being 40%. She is in the bottom 3 winrate champs along with ryze and nidalee which i admit even though i hated nidalee in the past its somewhat the same case with her now, a bit overnerfed. On the other hand ryze on the hands of someone who is good with him can be a monster but this isnt the same case with riven. No matter how perfectly you play her, you might become slightly ok for your team but never close to as good as any other champion, including even Taric which is ridiculously strong toplane right now.
She needs to be tuned for this season really badly. Riot please do not neglect this!!!