(: Add or to your mana pool.)
When Swamp Park enters the battlefield, sacrifice it unless you pay 3 life.
: Swamp Park becomes a 2/2 green Bear creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.)
: Swamp Park becomes a 2/2 green Bear creature until end of turn. It's still a land.
