Cabal Fortress enters the battlefield tapped.
: Add or to your mana pool.
Sacrifice Cabal Fortress: Add or to your mana pool.
: Cabal Fortress becomes a 2/2 black Skeleton creature until end of turn. It's still a land.
: Add 
or 
to your mana pool. or to your mana pool.
: Cabal Fortress becomes a 2/2 black Skeleton creature until end of turn. It's still a land.
