《Underground Sea》

（マナ・コストは存在しません）

Land

: Add either or to your mana pool.
Counts as both swamp and islands and is affected by spells that affect either. If a spell destroys one of these land types, this card is destroyed; if a spell alters one of these land types, the other land type is unaffected.

[1E]:R [2E]:R [2U]:R [3E]:R [ME2]:R [ME4]:R [VMA]:R