Explore the Underdark is a uncommon Sorcery card from Commander Legends: Battle for Baldur's Gate (CLB), collector number 232. Current market price: $0.24 (foil $1.62), TCGplayer market prices via Scryfall.
Search your library for up to two basic land cards and/or Gate cards, put them onto the battlefield tapped, then shuffle. You take the initiative.
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