I realise this is pre-hotfix, but wow, this is kinda out of whack.

https://gyazo.com/0777ea1a06ce0d8e686e5299b7bf66a3

Malz and Swain are doing SO well and SO badly, respectively. Galio being so strong... It seems to be a combo, I assume, of him countering Malz, new RoA being absolutely great for use with his W and generally countering mages. Side-note, I looked up Karthus and his winrate spiked. I think new RoA helped him a lot.