sentences:  The resulting genocidal wars would be her vengeance on Earth and the League for the extinction of her people.In the episode "Deathwalker", as Jha'dur's ship prepared to embark for Earth, a Vorlon warship arrived and destroyed it, vaporizing Jha'dur and the only existing sample of the drug.When asked why they killed her, Ambassador Kosh replied cryptically that the younger species were not ready for immortality.