(: Add or to your mana pool.)
When Krosan Caves enters the battlefield, sacrifice it unless you pay .
, : You gain 1 life.
, , Pay 1 life: Put a 1/1 black Skeleton creature token onto the battlefield.
: Add 
or 
to your mana pool.).
, : You gain 1 life., , Pay 1 life: Put a 1/1 black Skeleton creature token onto the battlefield.
