Complex sentence: These attacks turned out to be the work of the renegade Time Lord known as the Master, who had allied themselves with the Daleks, who were launching another bid for galactic conquest and hoped to pick up the pieces after a new Earth-Draconia War.
Split into simpler sentences: These attacks turned out to be the work of the renegade Time Lord known as the Master, who had allied himself with the Daleks. The Daleks were launching another bid for galactic conquest and hoped to pick up the pieces after a new Earth-Draconia War.