Reef Sandstone enters the battlefield tapped unless you pay .
: Add to your mana pool. Reef Sandstone doesn't untap during your next untap step.
, Sacrifice Reef Sandstone: Reef Sandstone deals 1 damage to target creature or player.
.
: Add 
to your mana pool. Reef Sandstone doesn't untap during your next untap step., Sacrifice Reef Sandstone: Reef Sandstone deals 1 damage to target creature or player.
