(: Add or to your mana pool.)
Howltooth Hollows enters the battlefield tapped.
, , Sacrifice Howltooth Hollows: Put a -1/-1 counter on target creature.
, : You gain 2 life.
: Add 
or 
to your mana pool.), , Sacrifice Howltooth Hollows: Put a -1/-1 counter on target creature.
, : You gain 2 life.
