Hell-Forged

Description (Slinger)
This item was imbued with demonic, unholy energy upon creation. As a result, it does triple damage to holy entities such as angels, cherubs, and champions. Beware, as such evil energies may seek to corrupt the user. Due to the unholy power, it can affect intangible holy entities such as spirits. Upon sensing familiarity, it pulses an incomprehensible black in the presence of unholy entities.

Reference
Chapter 59 "To The Couple Goes The Spoils"