scarabs are close to worthless unless in a mass. lets say you have 2 scarabs out and the creature you want to eat with them has 3 hp, you're going to need 2 more scarabs out on your field to be able to eat that creature, unless you use a spell that increases your scarabs' health. as long as the creature in mind has lower health than at least one of your scarabs, you can eat it... unless its immaterialed (untargetable). you can tell if a creature is immaterialed by the aether mark on the card. it the one that looks like a cool "x" with a circle around it XP.
