You specialize in whips, while not particularly one of the greatest weapons and usually over looked you have mastered it to a level where it is equal so the most heavily used weapons out there. Due to this level of mastery you gain the following. 

• You become proficient with whips if not already
• Attacks you make with whips deal an extra d4 in damage, this damage is the same as the normal damage type of your weapon.
• As a bonus action, you can focus your strikes and stretch your stance. Attack rolls you make with whips this turn have an additional 5ft. range.