This could be a excessively powerful in combination with ball lightning. Pandemonium with alot of cheap creatures could be a pretty powerful combo too.
Yes fallen druid could do it too, but imagine, this card could give it a shot at being a life dragon or something(the hatch egg list has many real good unit in it), then fallen druid could be used if it turns into a weenie instead.
Plus, thematically, fallen and ascendant working together doesn't make sense. Perhaps if the activation was light, instead of entropy, that would help prevent fallen and ascendant from working in combo so easily, and would make sense thematically with "ascendant".