(: Add or to your mana pool.)
When Darkslick Flagstones enters the battlefield, sacrifice it unless you pay 2 life.
, , Sacrifice Darkslick Flagstones: Target creature gets -2/-2 until end of turn.
: Add 
or 
to your mana pool.), , Sacrifice Darkslick Flagstones: Target creature gets -2/-2 until end of turn.
