Witch of the Blighted Bog

Deathtouch
Whenever you sacrifice a creature or Witch of the Blighted Bog is sent to the graveyard from the battlefield, you may pay {p/b}, if you do, target
player sacrifices a permanent. Use this ability
only once per creature sacrificed.
Whenever you lose life, target player loses that
much life.
"In a place of decay and pestilence, only those already sickly feel at home."