■Card Description
| Name | Underground Sea |
| Color | Colorless |
| Cost | |
| Cardtype | Land |
| Subtype | Island Swamp |
| Rarity | Rare |
| Oracle | ({Tap}: Add {Blue} or {Black}.) |
| Flavor Text | |
| Expansion | Revised Edition |
| Illustrator | Rob Alexander |
| Legality | Legacy,Vintage,Commander |
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■Vintage
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■Commander
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