You exposed your mind to the endless cosmos and the horrors lurking inside its void. You gain the following benefits:
Ability Score Improvement. Increase your Intelligence, Wisdom, or Charisma by 1, to a maximum of 20.
Alien Mind. You are immune to magic that allows other creatures to read your thoughts or sense your emotions. Creatures can telepathically communicate with you only if you allow it.
Insanity of the Stars. You have advantage on saving throws against being charmed or frightened, but disadvantage on saving throws against madness effects.
Masking Aura. As an action, you change the way you appear to spells and magical effect, such as a paladin’s Divine Sense or the trigger of a symbol spell. You can change your creature type, your alignment, and your size (Large or smaller). This effect lasts until you take an action to change it again or fall unconscious.
