User blog comment:Leyrann/Riven Rework - Yes she may be able to use one/@comment-7709681-20150127010321/@comment-4834593-20150127065137

Riven's still as resourceless as Renekton or Tryndamere. It's not needed, but it does give a bonus. And it isn't empowering anything. It's taking away directly accessible power in return for power after a while of fighting - the intended style. Yes, with that E bonus she gains more defensive power, but doing that would be equal to now getting a bigger shield in return for not having Wind slash. Not something you would decide on fast. And in teamfights it's probably not even going to be enough.