Ruins of Adventure
This rare and unique longsword is clearly the work of a madman, for, truly, what mad mage would willingly kill themselves to make such a lame magic item.
Plus One grants the user a +1 magical bonus on attack rolls, damage rolls, and initiative when wielding the sword. It does nothing else.
Hardly worth losing a point of Constitution over.
The sword was destroyed, along with its wielder Sasha Ethhald, when the latter was fused into an extra-dimensional stone floor.