Parshia found out that Beritra could control his minions over vast distances. She asked you to collect Essence of Power, the substance that Beritra used for the brainwashing. You released Beritra's minions, who had fallen victim to brainwashing, from their suffering and found the Essence of Power. You brought the Essence of Power to Bard. Bard hoped to use it to produce an antidote.