Lot wants to break out of Avalon, kill Darius and Linnet, take Darius' sword Excalibur, get revenge on the Pendragons by killing Linnet, get revenge on Arthur by killing Darius, get revenge on Pellinore for killing him, and use Excalibur to destroy the Void and take over both Earth and Rhenna, turning everyone into his slaves or heavily-controlled allies