Definition of thesis from the Collins English Dictionary The noun phrase A noun phrase is a word or group of words that can function as the subject, the object, or the complement in a sentence.
Sona, Ziggs, and Heimer are all still there on the top (well above 60% win rate) along with most of the champions that were there prior to the mark/dash .. Bard, Evelyn, and Elise are all still on the bottom (below 40% win rate) along with most of the champions that were there prior the mark/dash.
When I look at all of the high win rate champs, there's something about them that makes them really good at low elo (or in the case of Maokai, they're broken). When you look at lowest win rate champs, you have Elise, Leblanc, Twitch, Kass, TF, Nid, Lee Sin, etc.