Two-for-one deals are pretty awesome, and this card is a pretty cheap deal. When this card swings, your opponent is given a choice: lose a 1 toughness creature or lose a 1 toughness creature and take a damage. Usually, they'll choose the trade, but if you can somehow make this thing unblockable, tougher, or somehow less desirable to block, it becomes pretty good. On its own, it is not much more than a weaker Chaos Charm, but given the right support, this card has some potential.
Pros: Two-for-one deal if it hits
Cons: Weak, requires support