Blade of Chaos

The blade of this iron longsword is laced with thin lines of mithral that seem to shift and move constantly. Two twisted pieces of silver that end in large emeralds serve as its quillons. The handle is wrapped in green leather, and the pommel consists of a third emerald set into silver talons.

You gain a +2 bonus to attack and damage rolls made with this magic weapon. It has the following additional properties.

Binding Strike: When you successfully hit a creature with a melee attack, the target must succeed on a DC 17 Wisdom saving throw or has the Paralyzed condition for 1 minute. At the end of each of its next turns, an affected creature can make another Wisdom saving throw, ending the effect on itself on a success. On a successful save, target creature is immune to this effect for the next 24 hours. Spells: as a Magic Action, you can cast the darkness and the ray of enfeeblement spell (Spell Save DC 17). Once you cast one of those spells, you can't cast that spell again until you finish a Long Rest.

Sentience: Blade of Chaos is a sentient chaotic neutral weapon with an Intelligence of 17, a Wisdom of 10, and a Charisma of 17. It has hearing and Darkvision out of a range of 120 feet. The weapon can speak, read, and understand Common, and can communicate with its wielder telepathically. Its voice is arrogant and harsh. While you are attuned to it, Blade of Chaos also understands every language you know.

Personality: Blade of Chaos speaks with an arrogant voice, expecting to be obeyed and considering its wielders as inferior beings. The weapon's purpose is to add unpredictability to any situation while avoiding the boundaries of rules and laws.

Proficiency: simple, longsword Source: Treasures from Oerth p. 32 (Homebrew)