After the drastic cataclysm and the war between the Alliance & Horde continues, Arthura was present in the meeting between Warchief Garrosh Hellscream and Sylvanas, where the "Banshee Queen" reveals that the val'kyr have joined the Forsaken and the Horde. They nearby val'kyr Agatha then resurrects the nearby fallen corpses as Forsaken, much to the disgust of Garrosh and High Warlord Cromush.
Arthura later aids in the resurrection of Lord Godfrey and his lieutenants. When Lord Godfrey betrays and kills Sylvanas, Agatha and Daschla are immediately willing to sacrifice themselves to bring her back, while Arthura was hesitant pointing out that they would die in the act resurrecting Sylvanas. Arthura eventually agrees to sacrifice herself after being reminded of the pact they made.