I just happened to stumble across this thread as I stumbled through the forums. If only you'd advertised this idea a bit better Jmdt, maybe told people about it in the chat! xD
Anyways, I think it's a nice idea- works well with other cards- good synergy with Boneyard, etc like sSethia said. I know it's pretty much obvious, but you should probably say 'Where N is the number of skeletons on the field'- cards like Scarab show it's necessary or people might get confused and start crying.
Nice art and like the skill as well.
Actually, quick idea- People don't tend to *like* having skeletons on their side. They're defeated easily and owned by all shields. Considering you'd need your field *full* to have a high attack from the Regent, you could view this as an actual disadvantage, i.e it's not worth using the Regent because of the obstruction having the skeletons cause. Would saying N is equal to *all* skeletons on both fields.
Whadaya reckon?