: Exile target card from a graveyard. If it was a creature card, put a +1/+1 counter on Scavenging Ooze and you gain 1 life.
In nature, not a single bone or scrap of flesh goes to waste.
Official Rulings for Scavenging Ooze
7/1/2013 : If the target card is an illegal target when the ability tries to resolve, it will be countered and none of its effects will happen. No counter will be put on Scavenging Ooze and you won’t gain life.