When Arid Flats enters the battlefield, sacrifice it unless you pay .
, : Add to your mana pool.
: Arid Flats becomes a 2/2 white Soldier creature until end of turn. It's still a land.
., 
: Add 
to your mana pool., : Add to your mana pool.
: Arid Flats becomes a 2/2 white Soldier creature until end of turn. It's still a land.
