Crystal sword

Weapon (longsword), legendary (requires attunement by a
sorcerer)
This crystal sword is as strong as steel. It can be used as an
arcane focus. If necessary, it can be used to make melee
weapon attacks as well.
This sword has 7 charges. It regains 1d4+3 charges daily
at dawn. If you expend the last charge, roll a d20. On a 1, the
sword becomes a nonmagical, ornamental crystal sword. As a
bonus action, you can expend a charge to regain one
expended sorcery point.

Wonderous Items

Crystal sword

The stars of Pash-Mara patrickvandeleemput