Hellfire Greatsword

+2 to Damage and Attack rolls.
On hit, 1d6 fire damage.
Hellfire Weapon: If this damage kills a creature,
the creature’s soul rises from the River Styx as a
lemure in Avernus in 1d4 hours. If the creature
isn’t revived before then, only a wish spell or
killing the lemure and casting true resurrection
on the creature’s original body can restore it to
life. Constructs and devils are immune
to this effect.