Sivna was a middle-aged winter Eladrin woman with dark skin and painted white markings across her face and upper body. She often wore a tricorn hat which was white with blue lining (her Ring of the Frost Knight) and leathers painted with snowy camouflage. She spoke briefly and succinctly to all, and was especially reserved with those outside her Circle.
Sivna was a scout for the Circle of the Cracked Ice and sought to secure the region around their grove to the northwest of Garyn, drawing Frost Giants and violent clansmen away from the region by summoning elementals and beasts for those to chase or fight.
Sivna, if she trusted the party, could serve as a guide and even introduce them to her Circle of the Cracked Ice (and their archdruid, Franaxis).