[L bites his lip. Again, he's debating on how much he wants to say about this, even to Connor, whose sincerity isn't something he doubts or distrusts. It's just that he's taken on a burden that's been sapping his energy, and if that could be alleviated in any way...]

My talent as a witch, I've been told, is exceptional. But what I'm attempting still stretches beyond my current abilities. I'm using blood to compensate, but I don't have enough.

[He reaches up to twist a strand of his hair in his fingers.]

I've blacked out a few times and I can feel my heart skipping beats. It's worth it, of course, but... if there was any way I could get just a few more pints, it would lessen the toll significantly.