Foundry Bosk enters the battlefield tapped unless you pay .
: Add to your mana pool. Return Foundry Bosk to its owner's hand.
, Sacrifice Foundry Bosk: Add to your mana pool.
.
: Add 
to your mana pool. Return Foundry Bosk to its owner's hand., Sacrifice Foundry Bosk: Add 
to your mana pool.
