Nihilistic almost had it right with having the really powerful spells costing a lot of experience points and taking a lot of stat power to use but some are just overall abusive. Take Majesty which causes all enemies to stare at you and not attack. It requires a high appearance which is easily moved up by wearing diamond jewelry. Finally, hands down the easily most overused spell I cast was Theft of Vitea which made feed useless as it took blood from a distance. Thank god the designers made it so that if you killed any human from draining his blood through ToV you would not gain any experience.
Nothing really gives the overall satisfaction though as sucking blood the old fashion way.
I feel strongly that the whole game should of taken place in the dark ages as Vampires had a great mystery where in present time everyone believes they are a bad ass. Execution was key in this game and the atmosphere was truly amazing. Present time took a more humorous confusing approach and did a good job of making Christof the oddball. Add in some wise cracking party member and you have some funny moments. But to much time spent dungeon crawling instead of town exploring or questing made a bitter taste in my mouth.