Lesgle takes the dagger. Lesgle is glad to take the dagger. Lesgle doesn't know how to do anything very effective with a dagger, but goddamn is he glad it's there. He's also really glad to be with someone who can make nightmarish mirror monsters burst into flame.

The not-really-human-shaped one remains still, looking for a moment flatter and more properly mirrorish. Then it twists to one side and opens like a book into two mirrors.