Complex sentence: Apparently, some members of that race had precognitive abilities--it is revealed that the being later known as Nostradamus was a member of this race; he journeyed to Earth and used his precognitive abilities to elave behind the prohesies that would help Cade resist the Gua.
Split into simpler sentences: Apparently, some members of that race had precognitive abilities; it is revealed that the being later known as Nostradamus was a member of this race. He journeyed to Earth and used his precognitive abilities to leave behind the prophesies that would help Cade resist the Gua.