I really like the art as well.
The card design looks confused, though. Giving a creature an ability that requires
, having the darkness template, and having a
cost to play.
It does looks very aesthetically pleasing, though.
I like ability # 2, but with a suggestion to that. I think it would be better if the cost to devour should be the same element of the card. Also, instead of "Devour," it should be named differently because it would lose 1HP without eating. Something like.. "Insatiable Hunger" in the description while having "Devour" as the ability name at the bottom of the card when it's in play.
Even if it would be used as a Lobotomize, usually the weakest creatures have the best abilities, so they may die from hunger because they are too weak.