I took all the corrupted eggs and none of the sparrow Harbinger's Echo released for me (Corrupted Omelette Triumph from Cursebreaker Seal "The Dreaming City Triumphs"). Ahamkara's bones don't show up in ascendant challenges and it is not possible to complete the O Grave Robber Mine Triumph.
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Same here, very frusterating seeing as how I am now going to have to wait like 6 weeks for this particular ascendant challenge to come back. :/