You found a strange book that was being sold for a pretty cheap price at a garage sale. Out of curiosity you bought it and when you read it you noticed that it held spells that would allow you to summon demons.

One night, you go out into your backyard to try out one of the spells out of curiosity. As soon as you cast the spell, a magic circle appears in front of you and a 120ft tall demoness comes out of it.

"Puny mortal! You dare summon the mighty Derunia?!" She yells out proudly.