You can play cards that have a different regulation mark or that have no mark at all - under one condition: there has to be a printed version of the card with the current regulation
Im currently in the process of sleeving my entire Pikachu Collection with the same sleeves (including the non-Holos which werent sleeved yet) and re-ordering everything in its binders
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Dune Beetle: More vanillas, please
Just grab Kinnan, Bonder ProdigyKinnan, Bonder Prodigy, or Zirda, the DawnwakerZirda, the Dawnwaker and a Basalt MonolithBasalt Monolith and youve got yourself a DreadmawDreadmaw factory
Creature - Centaur Performer Dee Kay, Finder of the Lost When Dee Kay enters, open an Attraction