Silvertongue Dagger

Weapon (dagger), Rare, Requires attunement
This simple, elegant dagger once belonged to a renowned thief whose true name was never discovered.
You have a +1 bonus to attack and damage rolls made with this magic weapon.
When you attack a creature with this weapon and deal sneak attack damage, you may choose to taunt the target of the attack. If the target can hear you, add 1d8 psychic damage to the attack, and the target has disadvantage on the next attack roll it makes before the end of its next turn. You can use this property once, and regain use of it when you succeed on Deception check with a DC of 15 or higher against an NPC.
Returning. When you throw this weapon to make an attack, the weapon teleports back to your hand.