Zed has been ruined.
In Patch 3.13, Zed's Living shadow speed was decreased to 1500 from 2500. This makes Zed incredibly clunky having to wait for your shadow. Zed is suppose to be a fluent, quick assassin if you know how to use him. Now he's slow and at a huge disadvantage when faced against a lot of champs. Zed's slow being dependent of his shadow is another reason it has disadvantaged him. I have been playing Zed for a very long time, and now his whole feeling has changed.