Golden Butter Knife (5e Equipment)
From D&D Wiki
Wondrous item, very rare
The golden butter knife appears to be a contemporary butter knife. It is made of pure gold enchanted with an inordinate sharpness and toughness.
Metal Slicer. The golden butter knife can slice and cut through any non-magical metal, except for adamantine, as if it were soft butter.
Vorpal. The golden butter knife is so sharp that it can eventually cause limbs to be chopped off. When used as a weapon, it functions as a vorpal sword which deals 1d4 magical piercing damage on a hit.