YHESSS!!! Beast Ball... in English. we've been waiting so long for this card, and just in time for worlds 2018 too.
This card will almost certainly be included as a 1 of. maybe even a 2 of in most Buzzwole decks.
and this card can be used as an Alph Lithograth as well. look at your prizes, put them back down.
and there's nothing on the card that says to show your opponent the prize cards either, so even if you did have a Buzzwole prized, you can say to your opponent that your getting nothing, and your just burning it so you can get more cards with Octillery's Abyssal Hand.
shame you have to shuffle the prizes though, but at least the card gives you knowledge about what you got prized.
But if the ruling is correct, or i'm reading this right, the prizes DON'T get shuffled if you do pick an Ultra Beast pokemon 0__0