Made aware of an unnamed threat to all of Noth during her ascension to Heraldom, Elimarah Nylone used her influence within the Merse to learn of the enormous spy network it contained within.

She began to covertly recruit her own loyalists, both from and outside the Merse in service of her great need to discover and fight this threat. Impressionable young agents of hers began to worship Elimarah as a semi-divine being, and with little effort she ousted the existing Matron to become head of the Merse Collective.

Recognising her death would throw her network into disarray after the failed bombing of Broken Mantra, Elimarah created the 'Halcyon Days' contingency, allowing cells to conduct their own operations after her demise to combat what would later be identified as Second Revelation.

One such faction was formed by Paedra ne' Eidern during the siege of Palisades. Aware that if word did not get out of Elimarah's death, the contingency would not trigger, so Paedra and her Merse sisters renounced the gods and formed the Eidolons, with Grippsly as their vengeful figurehead.

They in turn poisoned the Pennant Archae, extending the seige of Palisades significantly and unintentionally weakening the Separatist Pennant Archae during the end of the siege.