Variant 5/6 + getting back into the game

TheInfinty

Hey I just got back into the game a few days ago. Lots changed. I was wondering if this roster could do variants 5/6?

Another question do I have any champs currently that got buffed that I should take up?
As I said I just got back into the game and don’t really quite know everything again. I haven’t played since April or may last year.