The Gaelean Chronicles: Heroes 4 Hire
Sword of Lyons
Weapon (Shortsword), Legendary
This weapon gains a +1 bonus to attack and damage rolls.
While equipped and sheathed, the wearer is invisible, as per the spell Greater Invisibility (PHB 246). When drawn, the invisibility ends.
The sword itself is always invisible. The sheath is invisible until the sword is drawn.