Sure, costing 5 does mean you can only run so many, unlike the Packmate which had Foretell, making it much easier to jam a bunch of them into your deck, but you should still value that first 1-2 copies pretty highly
Legendary Planeswalker - Teferi Toothy, Imaginary Friend Partner with Pir, Imaginative Rascal (When this creature enters, target player may put Pir into their hand from their library, then shuffle.) Whenever you draw a card, put a +1/+1 counter on Toothy
No matter what Alternate-Art Pokemon card you pull in Battle Styles, you can be sure it's a good hit
We were fortunate enough to open around 35 packs, and didnt pull a single one of the 22 SIRs, let alone a gold card
I wish I liked to read fiction
It is very clearly labeled as a proxy on the back, so you can be 100% clear with your play group you are using playtest cards and are not trying to pass these off as the real thing