It came from its mouth! [ Duh, Dio. ] Whether or not it's just something a creature like that can naturally do, or if it's some sort of machinery at work is the part I'm not so sure about where making it stop is concerned... [ Both possibilities with varying ways to potentially disable that ability.

With a wave of thanks for the shield, he glances around the room as he answers Keith's question, holding up his sword, which is now retracted back to about the length of a dagger. ]

Just this. So I can use it to get in close and hit it from far away if I have to. But it's not doing much of anything against that thing's armor!