flashfire booster box card list XY: Flashfire introduced 108 cards Is this worth? Found this

Master Ball [1st Edition] #116 Pokemon Gym Challenge Keep track of your collection value over time

By combining these two types, Scizor loses Bug's weakness to Flying and Rock, as well as Steel's weakness to Fighting and Ground

Borderless Surreal Space These cards are present in the main set but feature awesome alternate art treatments from different guest artists like Jack Hughes and Cacho Rubione

You cannot however forfeit Firearms altogether to avoid being hit by Michael's weakness, as it it will instead cause him 1 Damage and shuffle itself into the deck if he has no Firearms in play, so until he deals with it as intended, it may always return later to inflict him a Death of a Thousand Cuts