Dragonskull Ravine enters the battlefield tapped unless you pay 1 life.
: Add or to your mana pool.
Put Dragonskull Ravine on top of your library: Add to your mana pool.
, , Sacrifice Dragonskull Ravine: Destroy target nonbasic land.
: Add 
or 
to your mana pool.
to your mana pool. 
, , Sacrifice Dragonskull Ravine: Destroy target nonbasic land.
