The Gobbler

0: Exile target creature card from a graveyard, then put a loaylty counter on The Gobbler for each time you have previously activated this ability.
-5: Sacrifice a creature: Put X loyalty counters on The Gobbler where X is that creature's mana cost.
-X: Destroy target creature with converted mana cost X, then put a number of loyalty counters on The Gobbler equal to that creature's power.