Lady of Hours

Baroness Santia Ravenborne, also know as the Lady of Hours, was an incredibly powerful human sorceress whose actions led to the death of Estel's father and the (failed) kidnapping of Rydia, which led to a fierce battle during the siege of Bhem Darahl. She was ultimately slain by the Avalanche.

The party has learned little of her background, what is clear however that she was not of noble birth and only acquired the Ravenborne name after she used her powers to drive the Hillbreaker Clan from their home at Bhem Darahl during the Succession Wars. For over six decades since then she had ruled as the Baroness of the area, masking her age by assuming the identity of her descendants.

Abilities
She had a most extraordinary ancestor, a Time Dragon, a legendary being that could exert influence over Time itself, an ability that manifested itself in her. This granted her effective immortality, and allowed her to save the dwarven scholar Thoratin from Moradin's Judgement (until Rydia slit his throat and sent him Moradin).

Her control over Time allowed her fortress to withstand the most advanced dwarven artillery for months. It also gave her great advantage in battle, but ultimately the Avalanche was victorious.

She also had the ability to see into the near future at will and received visions of possible far future events from dreams. These visions led her to conclude that she must become an Avatar of Asgorath to safeguard the Mortal Plane from harm.

Avatar of Asgorath
To safeguard mortals from future cataclysms she planned to infuse herself with the draconic essence from the souls of sorcerers. e hired the Iron Flail to kidnap sorcerers of rare lineages for her, which led to the confrontation with Rydia and Estel's late father. Infusing herself with different types of draconic essence would have meant that she would act as a conduit for the remaining divine essence of Asgorath, the draconic deity that was slain soon after Creation. Combined with her powers she could become an Avatar of Asgorath, a being similar to the Living Gods, with the power to safeguard the world.