Swamp Farm enters the battlefield tapped unless you control an enchantment.
: Add or to your mana pool.
: Add to your mana pool. Put Swamp Farm on top of your library.
When Swamp Farm enters the battlefield, put a -1/-1 counter on target land.
: Add 
or 
to your mana pool.: Add 
to your mana pool. Put Swamp Farm on top of your library.
