Complex sentence: Two members of the Khalasar grab Viserys by the arms as Drogo melts his golden belt and pours the molten gold over Viserys's head, killing him.
Split into simpler sentences: Two members of the Khalasar grab Viserys by the arms as Drogo melts his golden belt. Drogo pours the molten gold over Viserys's head, killing him.