Rustic Carnarium enters the battlefield tapped unless you sacrifice an artifact.
: Add to your mana pool. Return Rustic Carnarium to its owner's hand.
, Sacrifice Rustic Carnarium: Add to your mana pool.
: Add 
to your mana pool. Return Rustic Carnarium to its owner's hand., Sacrifice Rustic Carnarium: Add 
to your mana pool.
