For as long as it remains exiled, that player may play it using its primary characteristics
It works in terms of collecting and 1 week in I was able to build a playable competitive deck with the wildcards I had and the cards farmed through the 12-14 hours I played in total this week
OLDER AND FOULER THINGS THAN ORCS Shelob has a phenomenal main set card, but her Commander variant is also pretty gnarly
Selling on your old cards to collectors has always been part of the hobby, and like baseball cards or Magic: The Gathering, Pokmon cards can sometimes go for thousands of pounds
Dark Flareon 35/82 and Dark Vaporeon 45/82, cards from themed sets and 4th edition prints
Or, for the meme factor, you could use the March of the Machine 'team up' creatures