When Bloodstained Valley enters the battlefield, return a land you control to its owner's hand.
: Add or to your mana pool.
: Bloodstained Valley becomes a 2/1 red and green Giant creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.: Bloodstained Valley becomes a 2/1 red and green Giant creature until end of turn. It's still a land.
