As far as I can tell, Cassiopeia is based off of Medusa from Greek mythology. Whenever somebody looks into Medusa's eyes they turn to stone. Not some bs ability she can do.
In my opinion, Cassiopeia would be much closer to her inspirations if her ulti was moved to her passive. --- It's like playing monopoly then flipping the board over when they land on mayfair,saying 'lol i do what i want its just a game' - SoulStrikes