Artificer's Extractor

The Artificer's Extractor is an unobtainable true damage weapon that behaves like a broadsword. It cannot be obtained through normal means.

Upon striking an enemy, it restores 10 Artificer's Energy. The damage of the weapon increases by 0.5% for every point of artificer's energy missing, up to a maximum of 50% increased damage with no energy remaining.

Note that it has no specific class, as it deals true damage rather than melee, ranged, magic, summon, throwing, radiant, or symphonic damage. This also means that its damage value is not affected by any other damage modifications. It also cannot receive modifiers.