Outside of the Mewtwo ex deck (which can still be defeated by fast decks like Pikachu ex or Starmie ex), every highly competitive deck can be defeated under the right circumstances
Dont worry too much about your choice here
Id say this was a very fun and worthwhile goal, but really, Gold Star cards just have massive appeal for me and there isnt another set in the English TCG, imo, that comes close (1st Edition Base PSA 10 complete set obviously is on a tier of its own, should go without saying, but Gold Stars are second for me in terms of prestige, price, scarcity and collectability)
Wie sie nchsten Monat abschneiden werden bleibt noch offen
Illustrated by Kevin Murphy Standard Not Legal Alchemy Not Legal Pioneer Not Legal Historic Not Legal Modern Legal Brawl Not Legal Legacy Legal Comp
Brawl Legal Vintage Legal Timeless Legal Commander Legal Pauper Not Legal Oathbreaker Legal Penny Not Legal Toolbox Buy This Card Notes and Rules Information for Ancient Adamantoise: If you control more than one Ancient Adamantoise, you choose which redirection effect to apply