yugioh lcyw card list YU-GI-OH! - Invader of Darkness (LCYW-EN251) - Legendary Collection 3: Yugi's World - 1st Edition Negate all Spell Card effects on the field YU-GI-OH! - Magician of Black

None of this means your old cards are worthless, it means you have to identify the actual valuable ones, which is the next step

Green has done it

Like past Secret Lairs featuring non-MTG properties - an imprint the publisher calls Universes Beyond - these cards are not tournament legal but could be used in the Commander format if your table is okay with you placing a horde of winged figurines on the battlefield

Ethan's Adventure #236 Pokemon Destined Rivals Keep track of your collection value over time

Or, if you want to keep up with the current TCG, we're always happy to chat about decks in the Wargamer Discord.