Lethal Thrower (5e Feat)
From D&D Wiki
Blow after blow was delivered. As the monk tried to flee, the heavily beaten man smiled and tossed a rock through his skull.
- When you throw an improvised weapon, you add your proficiency bonus to the attack roll and gain a +1 bonus to the damage roll.
- When you throw a weapon, its short range increases by 10 feet, and its long range increases by 20 feet.