Aghra is the central life force of the land, a thing that speaks to Amear, surrounds and fills them, and makes them what they are. It is both religion and gift, sacred and mundane, a thing seen in every aspect of life. For the Amear, it is what sets them apart from the Orcs, the Beasts, and the spirits that plague them. It manifests in varied ways; Overtly within the soul of the winterborn, covertly in the makeup of the summerborn.
Aghra is both order and chaos, for it leads to entropy, but can be harnessed to create and build. It is a deep mystery, a thing that the most aged wicce think on, and the most fearless warrior acknowledges. Aghra is the blood of life. Aghra is everything.
In game terms, Aghra is sorcery, that being the power of Anea drawn forth by the individual without intermediary. The holistic view of the Amear toward it is what has shaped the culture, made them who they are, and impacts how the view others, who cannot see it, or refuse to accept it.