The rune dagger is a relic from the far past. It first appeared in the hands of some Vikings who worshipped a dark, evil god unrelated to the adventurous gods of most Vikings. Anyone with knowledge of the occultic rituals necessary to loose the dagger’s power can use it. The dagger controls and creates cold, chaotic storms. It can create the formless castle in the center of its storm. Wizards are allowed a Magic Perception roll to recognize this dagger as evil and extremely powerful. Characters are allowed a History of Magic roll at half their Knowledge Score to realize that the dagger is connected with Elder Gods long banished from the Earth. (Anyone who actually has direct knowledge in the Elder Gods will be able to roll vs. twice their Knowledge Score.)