I'm a fan of this card and would include it in my cube if I owned one, but I don't find it interesting enough to go out of my way and acquire.
Look at it this way really, if the creature has four power or less, you can basically view it as an awkward Dismember for G instead of one. However, it can also be a card that screws up combat math, or simply wins the game by adding that extra bit of damage.
Mostly I'm going to guess it's used to kill things like Shadowmage Infiltrator, where the damage isn't the important thing but the creature being alive is.
Look at it this way really, if the creature has four power or less, you can basically view it as an awkward Dismember for G instead of one. However, it can also be a card that screws up combat math, or simply wins the game by adding that extra bit of damage.
Mostly I'm going to guess it's used to kill things like Shadowmage Infiltrator, where the damage isn't the important thing but the creature being alive is.
Oh, and I absolutely love the art.