You have had some special training with some special knife.

• Increase the chosen ability score by 1, to a maximum of 20. (Dexterity or Strength)

• While you are wielding a bladecatcher, you can use your reaction to try to disarm the opponent or even break a non-magical weapon being wielded by the target.

  The target must make a Strength saving throw. On a failed save, it drops the object you choose. The object lands at your feet or in your other hand if you are not weilding an off-hand weapon.
  
  You also may try to break the weapon your opponent is wielding. The target must make a Strength saving throw. On a failed save the weapon is considered as an improvised weapon until it is mended or reforged, however your AC score is reduced by three till end of your next turn.
  
  save DC for this feature = 8 + your proficiency bonus + your Strength or Dexterity modifier (your choice)