"HOLD!" The Druid knight shouted. "Make one move toward me and this, your leader, will be without his head!" The two trolls on the ground just moaned. But the third creature moved menacingly towards the Druid and his captive. "Come on, I would just love to hand you this trophy," the knight indicated the frighten troll head, "for trophies you have come for have you not?"
here, how to understand the structure of the sentence:for trophies you have come for have you not?"
thanks.