They're 1-drops that can do 2 damage per turn. The kind of stuff very agressive decks use.

I've actually cut them from the latest version and have been using Festering Mummy which are loads of fun with Supernatural Stamina.
Try chumping with the mummy, casting a Stamina, dealing 3 damage, putting a -1/-1 counter and keeping the mummy for another potential -1/-1 counter. That -1/-1 counter deck Barney wants would love this stuff...

Gimme