Caldera Swamp enters the battlefield tapped.
: Add or to your mana pool.
: Add to your mana pool. Put Caldera Swamp on top of your library.
, , Sacrifice Caldera Swamp: Target player gets a poison counter.
: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Caldera Swamp on top of your library., , Sacrifice Caldera Swamp: Target player gets a poison counter.
