Source: Player's Handbook
Quick to notice details of your environment, you gain the following benefits:
- Increase your Intelligence or Wisdom score by 1, to a maximum of 20.
- If you can see a creature's mouth while it is speaking a language you understand, you can interpret what it's saying by reading its lips.
- You have a +5 bonus to your passive Wisdom (Perception) and passive Intelligence (Investigation) scores.