A device that lets you talk to the dead! 

• Merlin: Oh wow, I'd love to talk to my father, seeing as I only had that one day before he got killed because of Uther's laws
• Guinevere: Oh wow I'd love to talk to my father, who got killed by Uther's guards
• Morgana: Oh wow I'd love to talk to my father who got killed in service of Uther
• Mordred: Oh wow I'd love to talk to my father who got sentenced to death by Uther
• Great Dragon: Oh wow I'd love to talk to anyone of my family because I've been missing them since Uther committed genocide against them
• Arthur: I MISS UTHER SO MUCH