Crucially, that mana doesnt empty until the end of combat
Hyper Librarian PSY-Framelord Omega Saryuja Skull Dread Heavymetalfoes Electrumite Cryston Halqifibrax Sky Striker Ace Kagari Galatea, the Orcust Automaton Predaplant Verte Anaconda Traps Metaverse Red Reboot Imperial Order Vanitys Emptiness Trickstar Reincarnation Spells Raigeki Harpies Feather Duster Nadir Servant Card Destruction Monster Reborn Foolish Burial Terraforming Gold Sarcophagus One for One Gateway of the Six Infernity Launcher Divine Wind of Mist Valley One Day of Peace Brilliant Fusion Dragonic Diagram Trickstar Light Stage Reinforcement of the Army Sky Striker Mecha Hornet Drones Semi-limited Yu-Gi-Oh Master Duel semi-limited cards list Semi-limited cards can be used but you're only allowed two copies of the card in your Main Deck, Extra Deck, or Side Deck
As for how many physical cards are in circulation, it is nearly impossible to tell
Its moderate price trends suggest continued appreciation
Ive written about the gap in price that happens when you have good cards in more than one language, and I expect this to be a great example
As each individual card is useless on its own, V-UNION cards are being sold in special boxes, rather than being included in booster packs
