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For ramp, you have the all-time classic mana rocks Sol Ring and Arcane Signet

See the Cards of From the Vault: Transform The introduction of double-faced cards was a big moment in Magic history

I could prob call these better than anyone

The archival-safe polypropylene materials used in their construction guarantee that your cards will remain protected and preserved for years to come

Note that cracking a fetchland counts as searching their library, so folks might not break that Terramorphic Expanse or their Polluted Mire unless they are needed, which is still a win for you as you slow them down

The most expensive card in the Journey Together set is the Special Edition Rare of Lillie's Clefairy ex, listed for an incredible $329.36 on TCGPlayer at the time of writing