Lost Soul

The Lost Soul is a hostile mob in the Desert of the Dead. It can inflict the Slowness Debuff

Drops
The Lost Soul has a 5.72% chance of dropping the Cursed Hand and a 2.86% chance of dropping the Breath of the Dead.

Lore
After defeating the Death Cactus, the Spouse tells the player that Lost Souls possess Cursed Hands that kill the lover of whoever pricks it with a Gnarly Cactus.