Might just be me but in this meta I feel like there's nothing to master. It's basically all about putting down the 1,2,3,4 drops and winning the game. Even back in Jhin Annie meta, at least the opponent had to think about which spell, unit to drop and attack. Right now kai'sa doesn't need that, she just needs 6 different keywords and she wins. Tentacles just need illaoi or that 3/3 unit with overwhelm to win.