It's from a book series I read as a kid. I prefer Doomgiver, but the name is emo and the icon lame.
2. Shieldbreaker: The Sword of Force
Shieldbreaker provides protection from all enemy attacks, whether melee, ranged, or magical. Like Townsaver, Shieldbreaker takes over the sword arm of the person using it, and cannot be put down until the battle is over. However, Shieldbreaker will deflect incoming blows. The Sword's weakness is its inability to be used against an unarmed foe, meaning that the wielder, weakened by using Shieldbreaker, can be defeated quite easily in hand-to-hand combat.
Shieldbreaker is unique among the Swords in that it can easily destroy any of the others in melee combat, with the exception of Woundhealer. In addition, any abilities possessed by the other Swords are negated by Shieldbreaker. For example, the wielder cannot be slain by Farslayer or tracked by Wayfinder.
While being used, Shieldbreaker emits a thudding rhythm that quickens when combat begins.