Vorpal
Level
10
With the vorpal fusion, a weapon can tear between the molecules of a creature. The weapon gains the severe wound critical hit effect. If the weapon already has a critical hit effect, when you score a critical hit, you can apply either the weapon’s normal critical hit effect or the severe wound effect. Only a weapon that deals bludgeoning, piercing, or slashing damage can benefit from this fusion.
Source
Core Rulebook pg. 195
Dragonscript
ID
c768e76ba78a36620c6b9702