A weapon master focuses on total and complete knowledge of weaponry. They understand it better than even those who created it, and they can use it to far greater effect than most others.

Weaponry excellence

Beginning when you chose this archetype at third level, you have advantage on ability checks made using a weapon (e.g. cutting a net with a dagger). In addition, when you score a critical hit with a weapon, you can cause the target to have vulnerability to the damage type of the weapon used until the end of your next turn, unless they already have resistance, immunity or vulnerability to it. Once you have used this feature, you cannot do so again until you finish a long rest.

Precise blows

Beginning at 7th level, once per turn, you can add a d4 to the damage of a single weapon attack you make. You must make this choice before making the attack roll, and if the attack misses, you do not deal the extra damage.

When you reach 10th level in this class, the extra damage increases to a d6. At 15th level, it becomes a d8. At 18th level, it becomes a d12.

Bonus Fighting Style

At 10th level, you have honed your weapon talents further. You can take one additional fighting style, choosing from Archery, Dueling, Great Weapon Fighting and Two Weapon Fighting.

Weapon specialist

Starting at 15th level, you grow more precise in your mastery of weapons. Choose one of the following options:

• Your attacks that deal bludgeoning damage ignore resistance to it. In addition, you never have disadvantage on attack rolls with weapons that deal bludgeoning damage, and you can treat any melee weapon that deals bludgeoning damage as if it had the Thrown property, with a normal range of 20 ft. and a long range of 60 ft..
• Your attacks that deal piercing damage ignore resistance to it. In addition, if you hit a creature with a melee attack that deals piercing damage, you can move the target up to 5 ft. to another location within range of the weapon. Alternatively, if you hit a creature with a ranged attack that deals piercing damage, you can push them up to 10 ft. away from you.
• Your attacks that deal slashing damage ignore resistance to it. In addition, you gain resistance to slashing damage.

Weapon defense

From 18th level, you can use your weapons to defend yourself when you are in dire need of protection. You can use your reaction when a creature hits you with a weapon attack to interpose your weapon between the source of damage and yourself. The creature must make the attack roll again with disadvantage, and must use the new roll. Once you have used this ability, you cannot use it again until you finish a short or long rest.