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