Chaotic Transformation
This is symmetrical exile dressed up as a wish. The removal half is genuinely clean: it can strip one of each permanent type off the board in a single sorcery, hitting the artifact, creature, enchantment, planeswalker, and land you least want to see. But the second clause is where the design turns on itself. Exiling a permanent does not just remove it; it hands its controller a dig, revealing until they find a card sharing a type and putting that onto the battlefield for free. Exile their creature and they might land a bomb; exile their land and they might unearth a better one. The cost of the removal is that you are effectively cascading for your opponents, converting known threats into random ones you cannot see coming. That randomness is also the payoff engine when you point the spell at your own board: exiling your own token or spent permanent to fish a fresh threat off the top is the intended play pattern, a controlled gamble that rewards a deck built with a high top-end density. The tension is unusually honest for a sweeper-adjacent card: nothing here is a two-for-one, because every permanent that leaves is replaced, and the whole spell resolves as a five-way coin flip in which your reads on both libraries decide whether you traded up or handed out gifts.
