SANCE Played in .007% of White Decks on EDHRec This Enchantments ability to spit out a free token every turn is certainly enticing
Then, for the rest of your turn, an ability used by any planeswalker with that type gets copied
[Update #2]: Magic: The Gathering is extending its Standard rotation from two to three years in order to help the floundering format on tabletop
You sacrifice flying creatures but you get to do more things with your own creatures on your turn, and bouncing cards of theirs with Man-o'-War and Tradewind Rider could deal with things you don't want to give to other players but don't want the original player to have, either
By the time Witnesss trigger resolves, Ephemerate will be in the graveyard, so you can pick it up
They come in the same four rarities that MTG cards do (common, uncommon, rare, and mythic), and you can spend one wildcard to craft/print any one card of the same rarity