Vayne in 5.20 PBE
http://www.surrenderat20.net/2015/09/929-pbe-update.html
Base attack damage lowered to 50.46 from 53.46 Attack damage growth increased to 3.5 from 3.25
Lol, yes cause Vayne's basic attack damage was definitely the problem. Not the true damage for max health, that'd just be silly.
I'd be more excited about the Kassadin skin if, you know, they actually made him legitimate again.
The Vi skin is awesome looking.