yugioh genesys deck I found my for : r/yugioh Genesys Format's got points. These

5 Dialga ex (Gold Crown) Space-Time Smackdown #207 Just as Dialga is one of the rarest Pokemon in the fourth generation Pokemon games, so too is its gold crown ex card one of the rarest cards in Pokemon TCG Pocket

Players are more likely to buy cards with powerful effects that will definitely see play, rather than cards that aren't powerful as ones they already have, so designers print newer cards that are stronger than the old ones

Time Wizard X LIGHT Level 2 [ Spellcaster / Effect ] ATK 500 DEF 400 Once per turn: You can toss a coin and call it

You'll compete against your opponent and see who is the best Pokemon trainer

Check the collector number The collector number can be another indicator of a valuable card