An ability score of your choice increases by 2, and a second ability score of your choice increases by 1.

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 discern colors in that darkness as shades of gray.

Your fanged bite is a natural weapon, which counts as a simple melee weapon with which you are proficient. You add your Constitution modifier, instead of your Strength modifier, to the attack and damage rolls when you attack with this bite, and it deals 1d4 piercing damage on a hit. You can choose for this bite to not deal any damage.

When you hit a humanoid creature that isn’t a Construct or Undead with this bite, you can choose to take its identity. For the next 24 hours, you can make yourself appear as it as an action, though none of your game statistics change. You revert to your original form if you are still transformed when this duration ends, or if you choose to do so as an action. Your clothing and equipment aren’t changed by this trait. You can only take one identity at a time in this way; if you choose to take another creature’s identity, the previous identity is lost.

If you kill a creature with this bite, you can semi-permanently store its identity, retaining it for up to 1 year. You can only store one identity at a time in this way; if you attempt to store another creature’s identity, the previous identity is lost.

When you take a creature’s identity, you can choose a skill or tool proficiency associated with it. If the creature’s statblock does not have any proficiencies, work with your DM to judge which ones would be appropriate. While transformed into that creature, you have proficiency in the associated skill or tool, and add double your proficiency bonus to checks using it instead of your normal proficiency bonus.