Simoun will personally deliver a pomegranate-shaped crystal lamp as a wedding gift. The lamp is to be placed on a plinth at the reception venue and will be bright enough to illuminate the entire hall, which was also walled with mirrors. After some time the light will flicker as if to go out. When someone attempts to raise the wick, a mechanism hidden within the lamp containing fulminated mercury will detonate, igniting the lamp which is actually filled with nitroglycerin, killing everyone in an enormous blast.