Your Dexterity score increases by 2, and your Intelligence score increases by 1.

Medusas mature at the same rate as humans, but they’re considered young until they reach the age of 20. On average, they can live to be 1000 years old.

Medusas act as if they are devoid of emotion and see others as tools to manipulate. They care little for law or chaos and are typically neutral evil.

Medusas match humans in average size and weight. Your size is Medium.

Your base walking speed is 30 feet.

You can see in dim light within 60 feet of you as if it were bright light, and in darkness as if it were dim light. You can’t discern color in darkness, only shades of gray.

Your Claws are natural weapons, which you can use to make unarmed strikes. If you hit with them, you deal slashing damage equal to 1d4 + your Dexterity or Strength modifier, instead of the bludgeoning damage normal for an unarmed strike.

You have advantage on saving throws against spells and other magical effects.

As a bonus action, you fixes your gaze on one creature within 60 feet of you that you can see and that can see your eyes. The target must make a Constitution saving throw against a DC equal to 10 + proficiency bonus. If the saving throw fails by 5 or more, the creature is instantly petrified. Otherwise, a creature that fails the save begins to turn to stone and is restrained. The restrained creature must repeat the saving throw at the end of its next turn, becoming petrified on a failure or ending the effect on a success. The petrification lasts until the creature is freed by a greater restoration spell or similar magic.

you can't loot anything other than Rare or more Rare Magic Items from a petrified creature and It is an evil deed to use this ability regardless of circumstances.

Your creature type is monstrosity, rather than humanoid.

You have tough, scales on your skin. When you aren’t wearing armor, your AC is 12 + your Dexterity modifier. You can use your natural armor to determine your AC if the armor you wear would leave you with a lower AC. A shield’s benefits apply as normal while you use your natural armor.

You can speak, read, and write Common and  Elvish.