The Sword of Grutte Pier

This black zweihänder once belonged to the Frisian hero Pier Gerolfs Donia, or "Grutte Pier" (Great Pier). Pier was reportedly so strong that he could decapitate several attackers in one swing of this mighty blade. On the hilt is inscribed the famous shibboleth that Pier would make captives recite, to be able to tell if they were Frisian or an enemy: Bûter, brea en griene tsiis: wa't dat net sizze kin, is gjin oprjochte Fries. (Butter, bread, and green cheese: if you can't say that, you're not a real Frisian.)

This sword is a +2 magical greatsword which negates any resistances to slashing and bludgeoning damage. Additionally, you can target two creatures of the same size who are within 5 ft. of each other with the same sweeping attack. On a hit, you deal identical damage to both targets.