When Vault Oasis enters the battlefield, you lose 1 life unless you reveal a multicolored card from your hand.
: Add to your mana pool. Activate this ability only if you control a Swamp.
: Add to your mana pool. Activate this ability only if you control a Forest.
, Sacrifice Vault Oasis: Target creature gets +2/+2 until end of turn.
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: Add 
to your mana pool. Activate this ability only if you control a Swamp.
to your mana pool. Activate this ability only if you control a Forest.
