When a Player at a high percent (at least 80%) gets hit by this, they will be instantly KOed. Unlike the Home-Run Bat, where the KO is from high knockback: the Death's Scythe simply causes the victim to be destroyed without requiring the victim to be sent off stage to KO.
Death's Scythe was wielded by Dracula's most loyal servant, Death. Death used it to steal people's souls, and he also attacks the vampire hunters with it as his weapon. The scythe also features as a weapon used by two Castlevania protagonists linked to Dracula. In Aria of Sorrow (Hard Mode only,) Dawn of Sorrow and Harmony of Despair the scythe serves as the strongest Dark-element weapon in those games and is used by Soma Cruz, a reincarnation of Dracula. In Curse of Darkness, the scythe can be forged and consequently used by Hector, a Devil Forgemaster who once served Dracula.
Ness using the Death Scythe to KO Bowser Jr. and Bowser