[kianduatha]

Well, we have two examples of F/N spells--Seven Year Fever and The Kindly Ones. We get this idea that F/N is life pushed too far, too extreme. So then, my suggested summon is basically a berserking, diseaseclouded elephant/other large animal(elephant seems to be pretty good, though, unless someone wants to make a diseased zebra sprite or something).

Another cool thing to do would be a N/D Carrion Drake. If you #copystatted a Frost drake or something, you might be even able to make it Dragon Master-able. I could imagine it having fear and/or poison breath, as well as venomous fangs.