Forge Hollows enters the battlefield tapped unless you pay .
: Add to your mana pool. If you played a land this turn, Add to your mana pool instead.
, Sacrifice Forge Hollows: Add to your mana pool.
.
: Add 
to your mana pool. If you played a land this turn, Add 
to your mana pool instead., Sacrifice Forge Hollows: Add 
to your mana pool.
