(: Add or to your mana pool.)
Mountain Flats enters the battlefield tapped unless you pay .
: Mountain Flats becomes a 2/2 white Kor Bird creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.)
.
: Mountain Flats becomes a 2/2 white Kor Bird creature until end of turn. It's still a land.
