(: Add or to your mana pool.)
When Watery Flats enters the battlefield, sacrifice it unless you pay .
: Watery Flats becomes a 2/2 black Horror creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.).
: Watery Flats becomes a 2/2 black Horror creature until end of turn. It's still a land.
