Arsenal Fighters, or just Arsenals, know what the right tool for the job is, and they know how to use it. To Arsenals, physical prowess is only half the battle. Arsenals rely on studying their enemies, learning their weaknesses, and hitting them, hard. 

Eye for Weakness

At 3rd level, when you hit an enemy, you may expend your reaction to analyze their weaknesses and strengths. When you analyze a creature, you learn all of its damage vulnerabilities, damage resistances, damage immunities, and condition immunities.

Quick Draw

Starting at 3rd level, you may use your bonus action to draw or sheathe a weapon. You may use this bonus action between different attacks in your Attack action. When you draw a weapon using this bonus action, you may reroll one of the damage die on the next attack you make with the weapon this turn. You must use the new roll.

Social Scrutiny

Starting at 7th level, your attention to detail helps you to say the right thing at the right time. You may reroll a Charisma (Deception), Charisma (Intimidation), or Charisma (Persuasion) check. You may use this feature a number of times equal to your proficiency bonus.

Natural Analyst

Starting at 10th level, your Eye for Weakness feature no longer uses your reaction.

Hot Swap

Starting at 10th level, your Quick Draw feature can be used to both sheathe and draw a weapon.

Peerless Arsenal

Starting at 15th level, your ability to swap between your weapons in a fight is unmatched. Your Quick Draw feature no longer expends your bonus action, and can be used after each attack you make through the attack action.

Deadly Flexibility

Starting at 18th level, when you successfully hit a creature with a weapon attack from a weapon they have not been damaged by this turn, you may roll an additional damage die.