Bump. Please, if you're going to make an item like this, we need a template!
Trying to reverse-engineer the template is impossible because I don't know what the original creature was. No DM worth his salt would allow this item because there's no way to know if if a level 1 creature would still have the channel resistance, fast healing, negative energy attack, channel negative energy as a 15th level cleric, ability scores, etc.
I don't care if you nerf it, just make it useable.
