The Frostcaller's Sigil - SkullFlake colorstack

Cold geometry and colder intentions. A skull rendered as a snowflake, its crystalline arms radiating outward with the symmetry of ice and the menace of bone, every fractal branch cut in deep relief. The frost-white and the deep blue are laid in stacked bands.

The Gravecallers told the household who would not see the next winter. The archivists hold that the Frostcaller told the winter who it could have, and that the corvid orders hung one of these beside every Gravecaller as the other half of the bargain. Winter given teeth. The Horde's favorite way to deck the halls with something dangerous. In the public record.