The first time I played the game I remember getting Call Lightning somewhere, and I gave it to Serena. Eventually I learned Call Lightning Lvl 3 or something. I eventually encountered Vozhd in Castle Vyserhad. He kicked my backside several times. I didn't really know how to handle him ...
At one point Christof and Wilhem were torpored, and only little Serena was left. So I ran away, up the stairs a bit, to think about my next move. I discovered that fat Vozhd can't fit through the door to come and whack me! So I just used Call Lightning to fry him ... at least a couple of times, because I ran out of blood. I checked inventory to see what I had to refill my blood: Precious little.. . .
The only thing I could think of doing (without quitting and starting over, because I was too proud) was to pass blood items from Wilhem to Serena, since he was equipped with plenty of bottles and blood stones and so forth. But he torpored in the room with Vozhd. I had no scroll of awaken, so I had to run in to where he was to be able to pass over inventory! It was like he was giving me stuff from the beyond. Anyway, I had to run in and out while not getting hit, but I managed to survive. I continued to do it this way for a while, using Call Lightning. I used some Fireballs too, since I knew that spell to 4th level. And lo, I actually killed the bastard!
Twas my first happy experience with a single discipline being the deciding factor of a battle. I guess I could've used Prison of Ice or some such thing, but I didn't know about these things back then (last month).
And to think it was a real waste, because Serena dies anyway, so I cheated Christof out of a whack of experience. Meh.