Taken from BGwiki:
*Increases Triple Attack damage by 2%.
*Upgraded from Assassin's Poulaines via Magian Trial 4712 or Assassin's Poulaines +1 via Magian Trial 4713
*Can be further augmented with Adds "Enh. 'Assassin's Charge' effect" via Magian Trial 4983
*Enhances Assassin's Charge effect by giving it +1% Critical Hit Rate per merit level.