Traverse the Outlands is a rare Sorcery card from Commander Legends: Battle for Baldur's Gate (CLB), collector number 258. Current market price: $5.51 (foil $6.54), TCGplayer market prices via Scryfall.
Search your library for up to X basic land cards, where X is the greatest power among creatures you control. Put those cards onto the battlefield tapped, then shuffle.
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