Edda was so afraid of her Spellscar and harming her own child that, unlike other wizards, she never utilized it or accepted it. After being ignored for some time, she would have episodes of blindness and be wracked with terrible visions - more flashes than the symbol-laden visions the gods gave her before. She was isolated during these episodes.
Edda Everfall was born in The Year of the Helm, 1362 to House Keenlight, a minor noble house of merchants and investors in Neverwinter. During her lifetime, she served as a oracle to the royal family of Neverwinter. In The Year of Blue Fire, 1385 The Spellplague struck, leaving Edda and the High Oracle spellscarred and the rest of the oracles in Neverwinter dead. Edda's husband Gathen Everfall was also brutally murdered by a mad mage as he fought to protect the castle. Early the next year, Edda gives birth to her only child, a daughter named Amafrey Silverton (née Everfall). Shortly after The High Oracle succumbed to her spellscar and Edda Everfall became High Oracle.
When Edda's granddaughter, Vala Silverton showed signs of the gift in The Year of Stalking Horrors, 1430, Edda took Vala under her wing, overseeing her tutelage directly. Edda continued to faithfully serve House Alagondar until her death in The Year of the Godly Invitation, 1449. Her grandaughter replaced her as High Oracle to the royal family of Neverwinter.