Complex sentence: He inadvertently rescues the sorceress who saves him from certain death on one occasion by a poisonous scorpion laced weapon, she claims that should he survive, the blood of the Scorpion shall flow within his veins (hence, his title).
Split into simpler sentences: He inadvertently rescues the sorceress who saves him from certain death on one occasion by a poisonous scorpion laced weapon. She claims that should he survive, the blood of the Scorpion shall flow within his veins (hence his title).