Realistically this isn't going to destroy that much stuff, but chasing that sweet feeling when it DOES is what you're here for if you're playing any of these decks anyways, and this is one of the best payoffs when it happens
This can lead to plenty of extra mill over the course of a long game, especially in Commander, where this adds each-opponent mill to any instances of single-target mill
The only exception would be if multiple effects that altered a Creature type were in play at the same time, particularly if they're using replacement effects (i.e., changing a Creature's type from one to another)
Like Sway of the Stars, it has only been printed in one set, but unlike Sway it has a good chance of actually winning the game for the player who casts it
In other words, there are layers upon layers to Palinchron that reward consistent peeling