(: Add or to your mana pool.)
When Unstable Flats enters the battlefield, sacrifice it unless you pay .
: Unstable Flats becomes a 2/1 red and black Shaman Dwarf creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.).: Unstable Flats becomes a 2/1 red and black Shaman Dwarf creature until end of turn. It's still a land.
