{C} Rotfeaster Maggot [Mystery Booster][LS M15 112]

Title
$0.25
$0.25
Out of stock
Set: Mystery Booster
Type: Creature — Insect
Rarity: Common
Cost: {4}{B}
When Rotfeaster Maggot enters the battlefield, exile target creature card from a graveyard. You gain life equal to that card's toughness.
Is it at the top of the food chain or the bottom?