(: Add or to your mana pool.)
Underground Karoo enters the battlefield tapped unless you control one or more creatures.
, : Target land becomes a 2/2 black Rat Skeleton creature until end of turn. It's still a land.
, : You gain 2 life.
: Add 
or 
to your mana pool.)
, : Target land becomes a 2/2 black Rat Skeleton creature until end of turn. It's still a land., : You gain 2 life.
