Shadow Steel Knightly Sword

Another deadly invention, but not by gnomes, Shadow Steel is said to require souls to be produced. According to rumors, the souls are torn into pieces using dark spells and transformed into a raw spiritual essence of pain, which takes a pitch-black sheen reflecting no light. Weapons made from it cannot be resisted by conventional metals. They cut through the spiritual essence of living flesh, discharging excruciating pain into the victim. The rare survivors of these weapons report levels of pain that can render a person inert for hours. When wielding a weapon made of Shadow Steel, you have advantage on attack rolls made against any target wearing medium or heavy armor. A creature hit by a Shadow Steel Blade must make a DC 14 Constitution saving throw, becoming stunned until the end of its next turn on a failed save.

Defending: A defending weapon is either made for parrying, has advanced techniques for use in parrying, or both. When you use a defending weapon, you can use your reaction to defend against a melee weapon attack that hits you. If you do, increase your AC by 1d4 against that attack.

Guard: Guard weapons allow you to fight defensively, using the weapon's long haft or flat surface for parrying. While you wield a guard weapon, whenever a hostile creature moves within your reach when you didn't move on your last turn, you can use your reaction to make a weapon attack with the guard weapon against that creature. If the attack hits, then it deals no damage, but the target immediately stops moving, and its speed becomes 0 until the end of its turn.

Precise: When you attack with a precise weapon, you can score a critical hit on a roll of 19 or 20. If a feature or item you have increases the numbers you can roll for a critical hit, a precise weapon increases that range by one. A fighter with Superior Critical, for instance, scores a critical hit on a roll of 17 to 20 with a precise weapon. Any roll lower than 20 must still hit to be a critical hit - it's not an automatic hit as if the roll was a 20.

Versatile: This weapon can be used with one or two hands. A damage value in parentheses appears with the property—the damage when the weapon is used with two hands to make a melee attack.

Proficiency: martial, longsword Source: Source: Grim Hollow: Campaign Guide p. 216 (Third Party), Grim Hollow: Player's Guide p. 131 (Third Party)