Exiling a permanent and turning into an indestructible god that distributes counters and draws more cards is well, ridiculous
More importantly, from a purely cynical point of view, they're ripe for cross-promotion
You can find the cards with errors but going to the app and scrolling down on certain erratad cards
Theres a lot of sacrifice fodder available to throw -1/-1 counters around, and the proliferate ability can help you to speed up sagas, kill bigger creatures with the previous ability, and grow some of your own creatures
Cogsworth is a defense powerhouse that will help ensure our challenging characters stay in the game, thanks to the Resist +1 he gives other characters
Embrace the mystery every pack is your ticket to rediscovering Magic in a bold new way