Impact Weapon Mastery

Enkoh armour is the best in the land—armour no sword can cleave nor arrow pierce. Holdo the barbarian found it very impressive. It never buckled, bent, burst, or broke, no matter how hard he hit it. If ever the folks inside the armour could say the same, he might have had to adapt his strategy.

Impact Property.
This weapon deals double damage to objects and structures.

Weapons With The Impact Property:
-Club, Greatclub, Light Hammer, Flail, Mace, Mace, Morningstar, Quarterstaff, Warhammer.

Tier 1 Advanced Techniques.

Direct Damage

Prerequisites: martial level 2, proficiency with at least one Impact weapon
Your damage rolls for attacks you make with Impact weapons ignore temporary hit points, striking at a target’s normal hit points directly. In addition, if an attack you make with an Impact weapon forces a target to make a Constitution saving throw to maintain its concentration, it has disadvantage on the saving throw.

Dizzying Strike

Prerequisites: martial level 2, proficiency with at least one Impact weapon
Once per turn, when you hit a creature with an attack using an Impact weapon, that creature’s speed is reduced by 10 feet until the end of its next turn. This effect can stack.

Tier 2 Advanced Techniques.

Superior Strikes; Impact

Prerequisites: martial level 6, a tier 1 Impact advanced technique
You can perform a superior strike with any weapon that has the Impact property.

Tier 3 Advanced Techniques.

Momentum Swing

Prerequisites: martial level 10, a tier 2 Impact advanced technique
When you take the Attack action and miss a target with an Impact weapon, you can immediately use a bonus action to make another attack with that weapon against the target. You don’t add your ability modifier to the damage of the bonus attack, unless that modifier is negative.

Staggering Strike

Prerequisites: martial level 10, a tier 2 Impact advanced technique
When you hit a creature with an Impact weapon and roll the highest result on the weapon’s damage dice or score a critical hit, that creature must succeed on a Constitution saving throw or be staggered until the end of its next turn. While staggered, a creature has disadvantage on all attack rolls and on ability checks and saving throws that use Dexterity or Intelligence, and it can’t take reactions.

Tier 4 Advanced Techniques.

Crushing Force

Prerequisites: martial level 14, a tier 3 Impact advanced technique
You have advantage on melee attack rolls with Impact weapons against creatures at least one size category smaller than you.

Shattered Steel

Prerequisites: martial level 14, a tier 3 Ammunition advanced technique
When you roll the maximum on your damage roll when you hit a creature with an Impact weapon, you push the force of that strike onto an object (such as a weapon) the creature is holding. The target must make a Strength (Athletics) check against your martial save DC. On a success, it drops the object. On a failure, the object shatters. If the object is a magic item of a rarity equal to or higher than that of your weapon, the target automatically succeeds on this check.