The Gutter (5e Equipment)
From D&D Wiki
Weapon (greataxe), very rare (requires attunemnet)
This magical weapon has a +2 bonus to attack and damage rolls. When an enemy is hit with this weapon, they must make a DC 12 Wisdom saving throw at the start of there turn or they are cursed and all wounds received thereafter cannot be healed for 24 hours unless the greater restoration spell or a similar effect is used on the creature.