Seán Forsyth is a 3D Sculptor based in Dublin, Ireland. Seán digitally sculpted the "Dorne Dagger", used by Ellaria Sand to kill Prince Doran Martell in the Water Gardens of Dorne. Working from drawings produced by Game of Thrones weapons master Tommy Dunne, Seán used ZBrush to model the dagger before having it 3D printed. This was the first time 3D printing was used to create a prop for the show. Tommy treated the 3D printed piece to produce a finish identical to weathered bronze. The dagger was then attached to a leather strap and worn on the wrist by Ellaria.