If their goal was to defeat him, I doubt they could, not without at least some help from whatever other foreign powers may be in this land. Assuming there were any, that is. If their goal was instead to capture him, then ignoring the same impossibility of achieving that goal, that meant that they must intend to take him back to Zebrica; the Four Lines are extremely protective of the Gift, to the point where they actively prune any extant family branches outside of their rigidly controlled breeding programs.