[Somehow this is wackier even than Liem's own situation, which he'd already considered plenty bizarre to begin with. He has to take a moment to consider it before finally moving on.]

I see. I ask only because your situation sounds familiar. Where I hail from, the undead were... well, not common, but well-enough known. Like you, they were harmed by life energy—though poison had no effect on them.

[How could it? They had no living processes to interfere with— Oh, never mind. He's never going to wrap his head around that one. ]

In any case, there is a spell I know that is most often used to harm the living, but its energy—that of entropy—invigorates the undead. I wondered if it might aid you also.