Does Essence Reaver need a nerf?

Essence Reaver grants 20% CDR on your Q W E with every Autohit. Every Champ that has at least 1 Stun is just unkillable cause they permastun their enemys. I mostly see Riven + EssenceReaver. What does anyone wants to do against that? You are stunned every second when she engages on you. And her shields are also permaactive. I think some items should be reworked for many melee champs. Just me or what do other people think?