Sigil of Frost is a Core Sigil in Tyranny.
Use the Sigil of Frost to drain heat and energy into the Void, condensing water into Frost and afflicting targets with intense cold. Long a closely-held secret of the School of Boreal Frost, the mages surrendered this knowledge to Kyros after the Northern general Graven Ashe was defeated by the Overlord's forces.
- Unlocked at the character creation by choosing frost spells training.
- Disfavored camp: Sold by Pentibor.
- Lethian's Crossing: Sold by Merchant Basila.