Shortsword Master

Prerequisite: Proficiency with the shortsword. 

You have learned how to use any shortsword with more effectiveness than most adventurers. This feat gives you the following benefits while wielding a shortsword:

• In your hands a shortsword does +1 damage and +1 to your attack roll while you are also using a shield in your off hand. 
• You roll a d4 and add the result to your initiative when you are using a shortsword. You must attack with your shortsword on your turn or you lose this bonus on your next turn and all consecutive turns, potentially changing the order of initiative. 
• When you roll a critical hit with a shortsword, you can add a d6 to your damage roll.
• When a creature is grappled you can use a bonus action to make a melee attack with a shortsword, if you used the attack action on your turn.