When Swamp Heights enters the battlefield, return a land you control to its owner's hand.
: Add or to your mana pool.
: Swamp Heights becomes a 2/1 black and white Cleric creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.: Swamp Heights becomes a 2/1 black and white Cleric creature until end of turn. It's still a land.
