Shadow of the Winter King

Assassin
Armed with the voracious sword Frostburn, court slayer Regel Winter once shed the blood of countless foes in service to Orbrin the Winter King.
Oathbreaker
But even the coldest steel cannot save those Regel loves: his beloved Princess Lenalin, her daughter Semana, and the Winter King himself, felled by treachery five years ago. 
Shadow
Barely an echo of the man he was, Regel forges a pact with the assassin who slew Orbrin, setting out on a deadly quest for vengeance that will change the face of the World of Ruin.