Vilenim

Vilenim is a spell to turn yourself into a vampire. A vampire is a powerful creature that can shapeshift into a bat at will. You have a literal thirst for blood, and some wicked sharp canine teeth to pierce the skin of your victim(s). However, your main weakness is that you cannot go into the sunlight whether you are a vampire or a bat. It will burn your skin, which will leave temporary damage, but lasts for 30 weeks minimum. {Excruciating pain for the first 15-20.} The spell will last for 25 minutes, then you will return to normal, feeling slightly dizzy and sleepy. If you do not get immediate rest after that, you will pass out for 2 days afterwards.