When Graven-land enters the battlefield, sacrifice it unless you pay 3 life.
, : Add to your mana pool.
: Graven-land becomes a 1/1 red and white Shaman creature with first strike until end of turn. It's still a land.
, 
: Add 
to your mana pool., : Add to your mana pool.
: Graven-land becomes a 1/1 red and white Shaman creature with first strike until end of turn. It's still a land.
