It seems like Red always gets some wacky chaotic Rare that does cool stuff, but is unplayable in Limited..and I think that’s probably the case here. Obviously, this can result in you getting a bunch of upgraded permanents, but it can also result in you downgrading your permanents. Sure, the ideal thing is to exile tokens or cheap things, and then upgrade them all, but actually creating a board state where that works out isn’t that easy. If you really like gambling, this card might be for you – but for every time it lets you cheat your best permanent into play, it will also effectively lose you the game. You can also exile your opponents stuff, and if they have something insane on their side, obviously you know you can downgrade it – but the situation is equally hard to manipulate in your favor when it comes to your opponent. So yeah, you can choose your opponents best permanents and your worst permanents when you cast this, and that’s cool – but the effect this actually has on the outcome of the game is usually not going to be in your favor, especially because you’ll end up spending a turn just sort of switching things around.