Apprehending

The apprehending fusion causes the weapon to grow spikes and overwrought iron fixtures, as befits its use by the Hellknights. When an apprehending weapon hits an enemy, you can activate the fusion as a reaction to perform a trip combat maneuver against that target with the same attack bonus as for the weapon attack. Additionally, the target must succeed at a Fortitude saving throw (DC = 10 + half the weapon’s item level + the ability score modifier you apply to attack rolls with the weapon) or be unable to cast spells or spell-like abilities for 1 round. Once the weapon has used this ability, it cannot use it again until you take a 10-minute rest to regain Stamina Points.