Jorngarl's Harm
1d12S·Martial·Axe·Two-handed
Runes +3, major striking, vorpal
This oversized greataxe, infamous for the chilling laughter it emits whenever it takes a life, was crafted by the frost giant sorcerer Jorngarl from the final blade named Toothy Morris after it was stolen in an attack on a Gray Gardener convoy. It functions as a +3 major striking vorpal greataxe that retains the unique properties of a Final Blade, trapping the souls of any it slays and preventing them from being returned to life by any means short of divine intervention, even a Wish ritual or similar magic.
Traits
This magic comes from the occult tradition, calling upon bizarre and ephemeral mysteries. Anything with this trait is magical. A creature with this trait is primarily constituted of or has a strong connection to occult magic.
Choose one creature adjacent to the initial target and within reach. If its AC is lower than your attack roll result for the critical hit, you deal damage to that creature equal to the result of the weapon damage dice you rolled (including extra dice for its potency rune, if any). This amount isn't doubled, and no bonuses or other additional dice apply to this damage.