Green Vents enters the battlefield tapped.
: Add to your mana pool. Activate this ability only if you control a Forest.
: Add to your mana pool. Activate this ability only if you control an Island.
, Sacrifice Green Vents: Add to your mana pool.
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: Add 
to your mana pool. Activate this ability only if you control a Forest.
to your mana pool. Activate this ability only if you control an Island.
to your mana pool.
