Zombies!
Yeah, things. Three of them. They looked like somebody took a dragonfly, blew it up to about human size, killed it, and then reanimated it with galvanic wires and corrupted knowledge. Necromancy on the semi-cheap; not as long-lasting as your classic undead, but good for a one-shot when you didn’t care about being subtle.
There was a rotting ruby — don’t ask how they get it to rot — centered in each monster’s forehead; more galvanic necromancy. Sort of like a lightning jar, only for necromantic energy. The critters looked fairly alert, too, which was the worst part. I remember when a galvanized zombie was barely able to shamble. Now we got zombieflies. Isn’t progress grand?