(: Add or to your mana pool.)
Flat Chamber enters the battlefield tapped unless you control an enchantment.
, , Sacrifice Flat Chamber: Prevent all combat damage that would be dealt this turn.
, : Counter target spell unless its controller pays .
: Add 
or 
to your mana pool.), , Sacrifice Flat Chamber: Prevent all combat damage that would be dealt this turn.
, : Counter target spell unless its controller pays .
