City Rat

Ability Score Increase. Your Wisdom score increases by 1.
Sneaky. You are proficient in the Stealth skill.
Skulker. When you are hidden from a creature and miss it with a ranged weapon attack, making the attack doesn't reveal your position.
Sunlight Sensitivity. You have disadvantage on attack rolls and on Wisdom (Perception) checks that rely on sight when you, the target of your attack, or whatever you are trying to perceive is in direct sunlight.

Ability Score Increase. Your Dexterity score increases by 2.

Rodent's Immunity. You are immune to disease. You have advantage on saving throws against poison, and you have resistance against poison damage. In addition, you can eat putrid or rotten food and still gain half the nutrition.

Darkvision You can see in dim light 60 feet as if it were in bright light, and in darkness as if it were dim light. You can't discern color in darkness, only shades of grey.

Languages. You can speak, and only speak Common and Draconic.