[--Chris--]

Have Inferno swords at the end, they aren't extremely powerful nor too valuable...I think it would make a decent prize...You could possibly have to kill evil-heavils to get them (they would drop them.) You said no sword or armor so errm...hmm...do you consider amulets and rings armor O.o? XD
Hm..maybe just put a bunch of evil-heavils to run around and a few of them would drop golden cards and castles...or maybe release a new baddy and this could be a way to introduce it.