Anatomist’s Knife

Weapon (dagger), rare (requires attunement)

This exquisite blade feels deadly in any hand that wields it. You gain a +1 bonus to attack and damage rolls made with this magic weapon (damage as a dagger). If you use it to sneak attack, or score a critical hit, the knife does an extra 1d6 damage as the target bleeds out (this die is also doubled if you get a critical hit on your sneak attack). Once per combat on your turn without using an action you may make a Wisdom (Insight) check opposed by your target’s Charisma (Deception) check. If you succeed you gain advantage on your next attack roll made on this target before the end of your next turn.