(: Add or to your mana pool.)
Flat Barrens enters the battlefield tapped unless you control one or more creatures.
, , Sacrifice Flat Barrens: Prevent all combat damage that would be dealt this turn.
, : Target player loses 1 life.
: Add 
or 
to your mana pool.), , Sacrifice Flat Barrens: Prevent all combat damage that would be dealt this turn.
, : Target player loses 1 life.
