Sounds really OP to me.
Lycanthrope, for example, is 2 Entropy and 2/1 Darkness, while this is only 1 Light and 2/1 Darkness, which makes it an excellent early attacker. Then you start bringing in the Angels/Archangels, and now you have a cheap 6 attacker as well as a constant absorber of damage. (granted, 6 hp isn't a lot, but it deserves at least 3 light quanta)