(: Add or to your mana pool.)
When Krosan Retreat enters the battlefield, sacrifice it unless you pay .
, , Sacrifice Krosan Retreat: Destroy target artifact.
, : Target land becomes a 3/3 blue Crab creature until end of turn. It's still a land.
: Add 
or 
to your mana pool.)., , Sacrifice Krosan Retreat: Destroy target artifact.
, : Target land becomes a 3/3 blue Crab creature until end of turn. It's still a land.
