(: Add or to your mana pool.)
Grass-Shelter enters the battlefield tapped unless you pay 3 life.
, , Sacrifice Grass-Shelter: 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 Grass-Shelter: Destroy target artifact.
, : Target land becomes a 3/3 blue Crab creature until end of turn. It's still a land.
