This sheath uses demiplanar enchantments to effectively sheath a blade in another realm, preventing it from being seen on the material plane. Originally designed as a way for actors to fake being stabbed on stage, this was quickly adopted by the less law abiding as a method of smuggling weapons.

Hidden Blade: You have advantage on all Dexterity (Sleight of Hand) checks made to conceal, or subtly draw the weapon in this sheath.