I'm starting to think Yorion's set to get banned on Monday, though Lurrus is on the chopping block too. I'll admit I'm not the best judge of creatures too, though I am a filthy casual.
It'll be Lurrus before Yorion in Modern, Legacy, and/or Vintage even if the results I've been hearing about are any indication, though both wouldn't surprise me.
Like I've legit heard talk of banning Companion in Vintage (Only things banned in Vintage are manual dexterity cards, ante cards, conspiracies, and Shahrazad. Quite a few cards restricted to 1 per deck though) from some of the judges I know. Not that I expect them to actually pull the trigger on it but from what I've heard about Lurrus it might have to be done.