You've developed a mastery over the use of whips

• Increase your Strength or Dexterity by 1, to a maximum of 20.
• You can attempt to retrieve tiny objects that are not being worn or carried from ten feet away. 
• Making a melee weapon attack roll with a whip will cause a critical hit on a 19 or 20. 
• Once per turn when you critically hit a creature, you can forego critical hit weapon damage to perform one of the following:
  • Disarm - If the target has a weapon or object in either hand, you can force it to drop one item
  • Disorient - If the target has a head, it will subtract 1d4 from its next Intelligence, Wisdom, or Charisma saving throws
  • Trip - If the target has legs that it uses for movement, it is knocked prone