tax cards mtg INFINITE LAND-BASED VALUE! UW Land Scroll Rack (Legacy Azorius Control MTG) and Ghostly Prison.) Land Tax Wilds of Eldraine:

I think this card will see a fair amount of play in more than a few decks

There are recently reprinted delve cards that are banned in multiple formats and restricted in Vintage

You are basically assured of never running out of cards again, but thats a lot of mana it asks of you

Stoneforge Mystic no longer finds Colossus Hammer (or anything else), Archon of Cruelty is just a big flier and no longer wins the game for Creativity decks, Primeval Titan cant tutor up lands and gets blocked by Elesh Norn, Mother of Machines for days, Omnaths landfall ability doesnt trigger - the list of popular decks and cards that Elesh Norn stops is surprisingly long

His ability The Treatment Is Working says that when you play him and when he quests, you can remove up to 2 damage from a chosen character and gain one lore for each damage removed this way