Quick questions

Didn’t play TFT about two weeks so I have a few questions:

• is glacial still broken?
• is pyke overpowered with his overpowered stundash?
• is gnar ult still a broken gamechanger?
• are full demon teams still toxic?
• did they both morde already and give a 3 member Phantom buff or added a fourth phantom?
• did they tweaked/buffed useless TF?
• is draven still the best carry?