If Balduvian Trading Post would enter the battlefield, sacrifice an untapped Mountain instead. If you do, put Balduvian Trading Post onto the battlefield. If you don't, put it into its owner's graveyard.
: Add to your mana pool.
, : Balduvian Trading Post deals 1 damage to target attacking creature.
, , Discard a card: You gain 4 life.
, , Pay 1 life: Put a 0/1 white Goat creature token onto the battlefield.
, , Sacrifice a creature: Return target artifact card from your graveyard to your hand.
, , Sacrifice an artifact: Draw a card.