Legate

The archetypal Legate takes a more studied approach to the martial prowess common to all fighters. Using a sharp mind and the initiative to follow through with decisions, the Legate is able to strike at critical areas of an opponent, crippling their ability to fight. A fighter who takes on the mantle of a Legate may not be the quickest battlefield tactician, but is able nonetheless to dominate battles of attrition and shift the flow of battle in their favor.

Crippling Strike

When you choose this archetype at 3rd level, your mental prowess grants insight into how others attack, and you are able to counter their attacks effectively.

As a bonus action you can analyze a creature you can see. When you take the attack action on your turn against that creature you can choose to make one of your weapon attacks into a special weapon attack called a Crippling Strike. This attack cripples the opponent, dealing an additional d8 of damage and imposing disadvantage on their melee or ranged attack rolls until the start of your next turn. You declare which attack type, melee or ranged, to impose disadvantage on when you make this attack. You can choose to make a Crippling Strike after the attack is rolled but before the outcome is decided. If you decide to analyze a different creature you can not make a crippling strike against the first until you use a bonus action to analyze it again.

You can use Crippling Strike a number of times equal your intelligence modifier + 1 and you regain all uses of Crippling Strike when you finish a short or long rest. The extra damage die increases to a d10 at level 10.

Eye for Detail

At 3rd level, you gain proficiency with the Investigation skill if you do not already have it

Information Broker

Starting at 7th level, you gain expertise in the investigation skill.

Additionally, whenever you make a persuasion check, you can choose to use your intelligence modifier rather than charisma.

Improved Crippling Strike

At 10th level, you are exceptional at reading your opponent’s movements.

the extra damage dice from your Crippling Strike increases to a d10.

Relentless

Starting at 15th level, when you roll initiative and you have no uses of Crippling Strike remaining, you regain one use.

Strike Mastery

At 18th level, whenever you hit an opponent with a weapon attack that you have already hit with your Crippling Strike this turn, you can add your extra damage die to the damage roll.