(: Add or to your mana pool.)
When Underground Oasis enters the battlefield, you lose 1 life unless you reveal a Horror card from your hand.
, , Sacrifice Underground Oasis: Target player discards a card.
, : Put a +1/+1 counter on target creature.
: Add 
or 
to your mana pool.)
, , Sacrifice Underground Oasis: Target player discards a card., : Put a +1/+1 counter on target creature.
