(: Add or to your mana pool.)
When Timberline River enters the battlefield, sacrifice it unless you pay .
: Timberline River becomes a 2/1 green and blue Squirrel creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.).: Timberline River becomes a 2/1 green and blue Squirrel creature until end of turn. It's still a land.
