Okay if I can give you an advice, if you don’t have most of the legendaries the deck becomes heavily weak.
So if you realy wanna start playing reno and improve your deck step by step (u said that u only have standard legendaries right?), kazakus is obviously a staple in this deck, as much as reno and brann. Here are the most important wild ones (if you already have guldan and godfrey !)
N’zoth has to be the next in your list!