Ultimate Multiple Critical Hit

You are an expert at attacking multiple times with spells and melee attacks effectively.

• You can score a critical hit on attack rolls between 17-20. If any damage doesn't require a roll for it to hit, you may roll a d20 to see if the damage critically hits (this is only for the purpose to see if the damage critically hits). 
• When you take an action you can make additional attacks with a melee or a spell on this action equal to your proficiency bonus.
• Your Dexterity or strength modifier increases by 2.
• Your Spell casting modifier increases by 2.