The upcoming MTG Doctor Who decks promise to provide us with every single iteration of The Doctor since the character was first introduced in 1963, plus a load of his trusty companions
It was so dominant that people even played Jace Beleren, the cheaper 3-mana Jace, partly as a weird answer to it, because the planeswalker legend rule at the time let you drop your own Jace and immediately get rid of your opponents
For example, flying on a noncreature artifact is just strange, but hexproof on a noncreature artifact is entirely useful
This might be a bit harder to measure, but a pawn shop or a collector is going to value something based on how much demand there is for that specific card
Especially the Sliver Queens are very popular right now, since the Commander Masters Sliver Deck has been announced by Wizards of the Coast recently