Lair of the Hydra is a rare Land card from Adventures in the Forgotten Realms Promos (PAFR), collector number 259a. Current market price: — (foil $14.69), TCGplayer market prices via Scryfall.
If you control two or more other lands, this land enters tapped. {T}: Add {G}. {X}{G}: Until end of turn, this land becomes an X/X green Hydra creature. It's still a land. X can't be 0.
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