Ambey, Insatiable Scrounge

{b}{b}-Ambey, Insatiable Scrounge gains deathtouch until end of turn.
Sacrifice a creature-Regenerate Ambey, Insatiable Scrounge.
Discard a card-Put a +1/+1 counter on
Ambey, Insatiable Scrounge. (Activate this ability only once per turn, and only as a sorcery)