Razorverge Marsh enters the battlefield tapped unless you pay .
: Add or to your mana pool.
Sacrifice Razorverge Marsh: Add or to your mana pool.
: Razorverge Marsh becomes a 2/2 white Bird creature until end of turn. It's still a land.
.
: Add 
or to your mana pool. or to your mana pool.
: Razorverge Marsh becomes a 2/2 white Bird creature until end of turn. It's still a land.
