Thrown Weapon Mastery

Novices of the Flying Star can hit a bullseye, but only from exactly 20 feet. A master, on the other hand, is as deadly at five inches as at five hundred. A whirlwind of flying metal, Katya can turn a knight’s plate mail into kihosan cheese or send a single shuriken through the silk-thin slot of their full-face helm.

Thrown Property.
If a weapon has the Thrown property, you can throw the weapon to make a ranged attack. If the weapon is a melee weapon, you use the same ability modifier for that attack roll and damage roll that you would use for a melee attack with the weapon. For example, if you throw a handaxe, you use your Strength, but if you throw a dagger, you can use either your Strength or your Dexterity, since the dagger has the Finesse property

Weapons With The Ammunition Property:
-Chakram, Dagger, Dart, Handaxe, Javelin, Light Hammer, Net, Spear, Shuriken, Starknife, Trident .

Tier 1 Advanced Techniques.

Close-Quarters Combat

Prerequisites: martial level 2, proficiency with at least one Thrown weapon
Being within 5 feet of a hostile creature doesn’t impose disadvantage on your ranged attack rolls made with Thrown weapons.

Distant Striker

Prerequisites: martial level 2, proficiency with at least one Thrown weapon
The normal and long ranges of ranged attacks you make with Thrown weapons is doubled. In addition, if you make a ranged attack with a Thrown weapon while hidden, missing doesn’t reveal your position.

Tier 2 Advanced Techniques.

Superior Strikes; Thrown

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

Tier 3 Advanced Techniques.

Flexible Attacker

Prerequisites: martial level 10, a tier 2 Thrown advanced technique
If you make a melee attack with a Thrown weapon on your turn, you can make a ranged weapon attack with that same weapon as a bonus action that turn.

Focussed Strike

Prerequisites: martial level 10, a tier 2 Thrown advanced technique
As a bonus action, you can steady your body and mind to give yourself advantage on the next attack roll you make with a Thrown weapon this turn.

Tier 4 Advanced Techniques.

Bullseye

Prerequisites: martial level 14, a tier 3 Thrown advanced technique
The critical threshold of ranged attack rolls you make using Thrown weapons is reduced by 1. If you score a critical hit against a creature with a ranged attack roll using a Thrown weapon, you can choose one of the following additional effects for the target to suffer:
-The target is blinded until the start of its next turn
-The target drops one object (such as a weapon) of your choice that it is holding.
-The target’s speed is halved until the end of its next turn.

Whirling Melee

Prerequisites: martial level 14, a tier 3 Thrown advanced technique
After you take the Attack action and make a melee attack against a creature on your turn, you gain advantage on attack rolls with Thrown weapons against other creatures until the end of the turn.