The following is a good spell to use as a vampire. A spell that you absolutely need is a Charm spell that has 100 points for Charm and only for two seconds. With those two effects, you do not need to be an apprentice to use the spell, and it takes about 10 to 20 Magicka to cast. Make this spell if you plan on being a 100% vampire. This spell makes anyone like you, even if you are a 100% vampire. You can now keep your bonuses and be able to barter and get information without having to feed every day.