Sandstone Vents enters the battlefield tapped unless you pay .
: Add to your mana pool.
: Add or to your mana pool. Each opponent gains 1 life.
, , Sacrifice Sandstone Vents: Target player draws two cards, then discards two cards.
.
: Add 
to your mana pool.: Add or 
to your mana pool. Each opponent gains 1 life., , Sacrifice Sandstone Vents: Target player draws two cards, then discards two cards.
