Phalanx

The Phalanx uses shields not just to defend, but to push forward the attack. Like the Legionnaires of old, the Phalanx knows the shield can be used to press the advance, defend the innocent, and even overcome the enemy.

Shield Dice: When you take this subclass, you gain a pool of shield dice equal to your proficiency bonus. It starts as d4s, and becomes d6s at 7th, d8s at 11th, and d10s at 18th level.

As a reaction, if an ally within 5ft of you would be attacked, you may expend one die from your pool, and add that number to his AC for that attack. You regain all expended shield dice after a short rest.

 

The Best Offense...

Starting at 3rd lvl, you have learned how to use a shield not just as a defensive impliment, but also as a way to push forward the attack.

Shields can now be used as weapons with the Light attribute, and deal bludgeoning damage equal to 1 shield die + strength modifier.

Staunch Defense

Starting at 7th level, shields give you an additional +1 to your AC.

...Is A Good Defense

You have a greater understanding of a shield's utility.

Starting at 10th lvl, you can now wield an additional shield, but only gain half of its AC boost.

Additionally, when wielding multiple shields, you can use your action to ram an enemy creature that is within 5 feet of you. You use one shield die and make a contested Strength check, and add the shield die to your roll. If the creature fails, they take 1d4 bludgeoning damage, and are pushed back 5ft and knocked prone. On a successful save, the target takes half damage and isn't moved. Large creatures have advantage against this check.

Shield Wall

Your mastery of shields exceeds that of those around you.

Starting at 15th lvl, when wielding a second shield, you gain an additional +1 to AC.

Additionally, when rolling a shield die to to add to an ally's AC, you make the roll with advantage.

Shield Mastery

You are a master of using a shield to it's true capacity.

Starting at 18th lvl, you gain the full boost to your AC from wielding a second shield.

Additionally, your shields now do 2 shield dice + STR modifier bludgeoning damage.