Plains Burrows enters the battlefield tapped unless you sacrifice a land.
, : Add to your mana pool.
: Plains Burrows becomes a 0/4 red and white Spirit creature with defender until end of turn. It's still a land.
, 
: Add 
to your mana pool., : Add to your mana pool.
: Plains Burrows becomes a 0/4 red and white Spirit creature with defender until end of turn. It's still a land.
