Katarina and DFG

Katarina was mentioned as a champ that needed attention after DFG was removed. Yeah, it can be a good Kat item, but she doesn't need it.

http://www.probuilds.net/champions/Katarina

It's built very infrequently on her at a high level. Her kit is fine you don't need to tough it and she's not underpowered after the DFG removal.