pokemon card costco Pokémon Ultra Beast Buzzwole/Xurkitree Trading Game With Dialga 19.97 Tins at Costco :

As such, it doesn't hurt the game of Magic that these sorts of collectables exist, because if it doesn't interest you then you can opt out, and if you're lucky enough to open one then cool, you can sell it and buy many versions of the plain game piece

Rarity and limited print runs Rarity forms the foundation of Pokmon card value

I therefore dont blame the design team for completely neglecting the potentially broken stuff you can do with a Primeval Titan, but my guess is, that they did not think this through completely

You see, when you attack with Ghalta and Mavren out, you get two options to choose from as an attack trigger