Legendary Weapon (Longsword), Versatile, Requires attunement. 

• You gain +3 bonus to attack and damage rolls made with this magical weapon. 
• Attacks made with this weapon deal additional 2d10 force damage against Fey creatures. 
• You have blindsight with a range of 30 feet. 

Bane of the Unreal

• When you attack an illusion with this weapon, the illusion is immediately dispelled.
• Once per short rest you can use your bonus action to end all illusion spells and effects within 90 feet of you. 
• Each time you break concentration on or otherwise end an illusion spell or effect, its creator takes 5d10 psychic damage 

Unbreakable Willpower. When forced to make a Charisma saving throw, you can use your reaction to gain a +10 bonus to the roll, ending the effect or spell if you succeed on the roll, and forcing the creature that created the effect to make a DC 18 Wisdom saving throw, becoming frightened of you for 1 minute on a failed saving throw. At the end of each of their turns, the target can make another Wisdom saving throw, ending the frightened condition on a success.
If this feature effect is used against the Zone of Truth spell, you can instead decide to make the caster think you failed on the saving throw even if you succeeded, with no further effects.

Reality Slash (Recharge 5-6). When you hit a creature with an attack made with this weapon, you can force them to make a DC 18 Wisdom saving throw. On a failed saving throw they take extra 2d10 force damage, they automatically lose their concentration, and they become unable to teleport for 1 minute. 

Curse (For DMs only)
Curse of the Nameless. This weapon was solely created to bring destruction to the Fey. One of the greatest weapons a Fey can have over a person is if they know their name as it gives them control over them. That is why this weapon robs any who wield it of their name and everything that comes with it. All written mentions of your name become replaced by the word Nameless.
You lose your name and no creature including you can remember it. Even though you fully lose only your own name, any name connected to you loses any of its power over others as well. If you yourself invoke the name of your group for example, it will never have any substantial effect on others.
Any new name, pseudonym or moniker gained after this effect takes place will be affected by this curse 24 hours after acquiring it as well. The only way you can be addressed without the curse taking place is “Nameless” or a similar word.