Essence Reaver shouldn't give 20% CDR from just 20% Crit

Its too strong and pretty much synchronizes with any ADC item that has 20% crit.

Hell, you can even by a Cloak of agility and be able to use that item to its full potential.

Make it be something like 40% crit( not including ER) = 20% CDR so its not strong as a first/ second item