Sure, Hedron Archive may be a relatively simple card, but sometimes, simple is best
Against controlling decks with more removal it will be far less reliable for sure
When I was reading through the top 16 deck profiles, there was one deck that caught me slightly by surprise, and one I was pretty happy to see do so well
Now I hate to go off topic a little but I have a little interesting fact about this game that I don't think a whole lot of people know, in Japan there was this singer that a lot of people know by the name of Imakuni and for a while Nintendo was using Imakuni on some of their trainer cards (of course they were joke cards and couldn't be used in official Pokmon tournaments), and in this game Imakuni makes an appearance he will have a black outfit on with some crazy ears he will also use some of his joke cards in a battle with you
While Mistake is face-up on the field, neither player can add cards to their hands from the deck, apart from the draw phase