It was released alongside Structure Deck: Harpie Lady Sisters
Sure, it does make tokens and thats all very well and good, but stopping counterspells or removal from messing up your plans is far more powerful
If Primeval Spawn would enter the battlefield and it wasnt cast or no mana was spent to cast it, exile it instead makes it so you cant Reanimate, Sneak Attack or Polymorph it into existence and this design choice feels very deliberate
Of course, you also get some pretty cool stuff along with the packs like excellent damage counters (the coolest looking so far) and a Mimikyu promo card
The next thing you'll want to look for is removal, which is any card that gets rid of your opponent's cards
Specifically, here is our recommendation: Budget $500-$2,200 (500-2,000): Target starters (Blastoise, Venusaur) in PSA 8, or secondary cards (Dragonite, Espeon) in PSA 9