Interesting, but I'm missing the point of this card. Unupgraded, it's useless without nightfall, and with nightfall is on weaker than a skeleton? Upgraded it's still neigh-useless. It can only eat 1HP creatures with nightfall, and with nightfall out, every dark and death creatures are a minimum of 2HP. It would be restricted to only a handful of creatures it can eat: Lycanthrope (as it first comes out), Forest Spirit (unupgraded), Ash eater, Lava Golem (1st turn), Photons, Sparks, Fate Egg, and Deja Vu (Unupgraded).