Shane got a tiny bit distracted when the suits started herding elves into the circle. He needed to ask William about that spell later. Now, though, the circle was coming together and it was time to draw the rest of the elves into it.
Shane grabbed a knife off the nearest shelf and drew it along his palm. It was going to hurt later, but at the moment his adrenaline was running high enough that he barely felt it. He moved quickly into the circle of knights they'd created, smearing the blood from his hand onto them. From what he could tell, the house elves were relying on sound and scent more than eye sight. If he was wrong...he didn't want to think about it.
"Come on, creepy bastards," he said and used the knife to bang on the nearest piece of metal. "Come get some food."
It caught their attention, and the few that had been moving away changed direction, shuffling toward him.