That's for when they have a better lab to work with, in any case. Will nods at the explanation, because it's just as good as any. Plus it sounds nice and scientific, and he likes to think he had something to do with that.

"Do you think you could... still the water inside a living thing?" Would that stop their blood? Just hold them in place? Make them very, very cold? "I suppose that answers the question of how you might use it offensively."