(: Add or to your mana pool.)
Leechridden Karst enters the battlefield tapped unless you sacrifice a colorless permanent.
, , Sacrifice Leechridden Karst: Put a -1/-1 counter on target creature.
, : You gain 2 life.
: Add 
or 
to your mana pool.), , Sacrifice Leechridden Karst: Put a -1/-1 counter on target creature.
, : You gain 2 life.
