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({T}: Add {U} or {B}.)
Abilities, attacks, weakness & resistance
Other cards from Collectors' Edition
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Underground Sea (CED-286) is a non-basic land with the subtypes Island and Swamp from the Collectors' Edition. It has the mana ability to tap for either blue or black mana. It functions like a dual land granting both basic land types, so effects that care about land types will recognize it even though it is not a basic land.
Catalog pricing data as of 18 Apr 2026, 15:53
