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Mage is a marketplace to buy and sell Magic: The Gathering cards, for the UK players and game stores

You'd have plenty of duplicates of other Rares and ~35 total Mythics but finding those last Rares is always tricky

For those seeking a more streamlined approach, websites like PrintMTG.com offer significant advantages: Easy-to-Use Templates : PrintMTG.com provides templates that simplify the design process

The Kismet tap effect buying a turn to answer Aetherworks Marvel is very impactful, as is being tutorable off Traverse the Ulvenwald Worth noting: the Aether Revolt pseudo-proliferate cards let you choose an opponents permanents

If you are looking to buy cards from the US, that's easily remedied with TCGplayer's huge catalog, but it's now even easier to buy cards from the site without being in the US yourself