Savage Ghoul, Ghoul Lord, etc) or Skeletons (Giant Skeleton, Skeletal Warrior, etc) in order to create a good lineup. The only drawback to this card is that it discards 1 corpse in the graveyard when put into play, so you need something to be dead in order to play it. It's a pretty standard unit, though, and it makes a good defender.
Strong against: Offensive allies, rush decks.
Weak against: blue decks, develop decks.