race features:
Changeling Instincts: You gain proficiency with two of the following skills of your choice: Deception, Insight, Intimidation, and Persuasion.
Shapechanger: As an action, you can change your appearance and your voice. You determine the specifics of the changes, including your coloration, hair length, and sex. You can also adjust your height and weight, but not so much that your size changes. You can make yourself appear as a member of another race, though none of your game statistics change. You can't duplicate the appearance of a creature you've never seen, and you must adopt a form that has the same basic arrangement of limbs that you have. Your clothing and equipment aren't changed by this trait. You stay in the new form until you use an action to revert to your true form or until you die.
Unsettling Visage: When a creature you can see makes an attack roll against you, you can use your reaction to impose disadvantage on the roll. You must use this feature before knowing whether the attack hits or misses. Using this trait reveals your shapeshifting nature to any creature within 30 feet that can see you. Once you use this trait, you can’t use it again until you finish a short or long rest.
Racial Description
Masks and Personas: In their true form, Changelings are pale, with colorless eyes and silver-white hair. It is rare to see a changeling in that form, for a typical Changeling changes their shape the way others might change clothes. A casual shape one created on the spur of the moment, with no depth or history-is called a mask. A mask can be used to express a mood or to serve a specific purpose and then might never be used again. However, many Changelings develop identities that have more depth. They build an identity over time, crafting a persona with a history and beliefs. This focused identity helps a Changeling pinpoint a practical skill or emotion. A Changeling adventurer might have personas for many situations, including negotiation, investigation, and combat. Personas can be shared by multiple Changelings; there might be three healers in a community, but whoever is on duty will adopt the persona of Tek, the kindly old medic. Personas can even be passed down through a family, allowing a younger Changeling to take advantage of contacts established by the persona's previous users.
Changeling Names: A Changeling might use a different name for each mask and persona and adopt new names as easily as they change faces. The true name of a Changeling tends to be simple and monosyllabic; however, there are often accents to a Changeling’s name that are expressed through shapeshifting, something single-skins will likely miss. So, two Changelings might have the name Jin, but one is Jin-with-Vivid-Blue-Eyes, and one is Jin-with-Golden-Nails. Changelings have a fluid relationship with gender, seeing it as one characteristic to change among many