Frigg
Frigg is Queen of Asgard and the only mind in the Nine Realms that truly rivals her husband's. She is a seeress without equal: where Odin gathers knowledge by sacrifice and stratagem, Frigg simply knows — every thread of fate laid bare before her — and she chooses, with iron discipline, which threads to speak aloud.
She knows how it all ends. She knows how Baldr dies. She has extracted oaths from every force in creation to prevent it, and she knows, too, the one oath she failed to take. That she carries this and still rules with a steady hand is its own kind of power.
The Silence of the Seeress
Frigg's gift is also her burden: to see all ends and reveal almost none, lest the telling bring them about the faster.
TODO: her network of handmaidens, her quiet sovereignty over the household of gods, and the secrets she keeps from Odin himself.