Leblanc's passive has too much damage.
As many high elo players know, leblanc is ridiculously strong and is the strongest mid laner right now. Riot knows this and is nerfing her E and Q damage. However, this isn't really going to do anything because her E isn't used for damage, its used to proc her ridiculously high damage passive. A good nerf would be to reduce her passive damage by 10% in addition to the current nerfs.