Sorcerers Apprentice
Hero
Perhaps this is precisely why Spell Versatility didn't make it. WotC realized it was a crappy quality rule and that including it in Tasha would result in a lot of people adopting it without proper scrutiny.Why? It's perfectly reasonable to not want to have to worry about disrupting the game with crappy quality stuff, and a LOT 3rd party and unofficial UA stuff falls into that category. Not that all official content is fantastic, but a there's a lot less worry and having to scrutinize things to make sure.