During his education among the Fianna, the young warrior learns above all to channel the energies to make the War Fury rise in him.
The Sessairs call this savagery “Fiann’s Blood,” referring to their goddess of war. Every year, during a ritual feast, the Priestesses of
the Goddess select the warriors in which they have detected “Danu’s Blood.” This divine gift’s power is such in these warriors, that
the War Fury can make the Spasm of Fury appear in them, which is a state of murderous madness so extreme that the fighter’s body
undergoes incredible metamorphoses.