The primal the Garleans encountered in Gyr Abania

[Hinoto-no-Ryuji]

And now I'm really curious about this, because I've never heard about this Mystery Primal - where would one look if they wanted a primary source on it, Moose-sensei?

[Anonymoose]

And now I'm really curious about this, because I've never heard about this Mystery Primal - where would one look if they wanted a primary source on it, Moose-sensei?

It appeared on pages relating to the Garlean Empre, more specifically Gaius van Baelsar on most occasions (such as the Lodestone right now)

In subjugating Ala Mhigo, van Baelsar employed subterfuge to stoke the fires of civil unrest, a masterstroke which led to the nation’s capture without the need for a protracted siege. However, the unanticipated appearance of a primal shortly thereafter prompted the Empire to halt the legion’s advance. The legatus has since remained in Ala Mhigo, where he rules as an imperial viceroy.