So Vayne in this patch is quite weak. It's a snowballing patch where it is important to be able to survive the early and midgame as Vayne. She isn't that great as a soloq champion because she becomes stronger and easier with help and peel, which you can't expect to get in soloq. I don't recommend her, but she is really fun to play. If you put a lot of time into her she can be really rewarding and quite an avarage champion. She is also very difficult, so if you wanna learn to play her make sure to play alot of games with her. She can pick up kills in the laningphase but most of the time you will be destroyed in lane.