By RAW changelings revert when they DIE but not when they are unconscious (it would be hard to maintain a long term masquerade if you revert when you sleep!). I bet suggested that a piece of a Changeling — such as cut hair — WILL revert, but that this is slow and may take up to 24 hours.
Yes. The power that allows a changeling to disguise themselves states: The new form lasts until you change form again. The only thing that would supersede the wording of the power is the unconscious condition, but there is nothing there that indicates that effects end.
Per the race description, you revert when you die. Unconscious is not called out, so no reverting when unconscious.
Changelings don't need to sleep. Instead, they meditate deeply, remaining semiconscious, for 4 hours a day. (The Common word for such meditation is “trance.”) After resting in this way, you gain the same benefit that a human does from 8 hours of sleep. Languages.
Changelings are able to change their form at will without expending a spell slot or using a disguise kit, but there are limitations to their abilities. For instance, they cannot change the clothing or equipment that they are wearing. Whatever they were wearing as their previous form will carry over to their new one.
The short version is that a Changeling can shapeshift to a form that can produce sperm to impregnate someone, and can shapeshift to a form with a uterus and eggs to get pregnant, but a pregnant Changeling cannot shapechange to a form without a uterus without ending the pregnancy.
A changeling is typically identifiable via a number of traits; in Irish legend, a fairy child may appear sickly and will not grow in size like a normal child, and may have notable physical characteristics such as a beard or long teeth.
Most changelings don't know they're changelings.
Though they may always feel somewhat different or removed from human life, most changelings are too young to understand who they truly are.
Changelings don't inherently recognize each other. If they don't want to be recognized then when they do something suspicious it would be an insight check against the changelings deception, which the changeling has advantage on. A changeling could have expertise in insight from divergent persona.
Changelings have red blood like a majority of the other races. Bleeding around others may alert many that the Changeling is not of the same race (should the blood color vary). For this reason, a Changeling will usually choose to take the form of a race with red blood.
Changelings born from two changeling parents are born in their natural form: pale, slender, with colorless eyes and white hair.
As for being tattooed, changelings can definitely be tattooed, and they can just as easily erase the tattoo with a moment's thought.
While changelings can look like anyone, they do have a true form. Their natural look can be scary to some due to their lack of detail and distinctive features. Their skin tone is always pale, either white or light gray, and they tend to have slender bodies with limbs slightly longer in proportion to other humanoids.
The Gift of Water is the blessing of the Waterborn. The changelings blessed with it can spend one point of Glamour to allow the changeling to breathe underwater and swim at a terrific rate (equal to twice the character's Speed rating) for the rest of the scene.
Appearance. In their true form, or their form "at rest", changelings have pale skin, colorless eyes that can be completely white or completely black, and white or silver-white hair.
Unlike doppelgangers, which are entirely genderless, a changeling does have a default gender that manifests in adolescence, but each changeling can adapt his or her form to be of either gender, hermaphroditic (both genders simultaneously), or entirely genderless.
changeling, in European folklore, a deformed or imbecilic offspring of fairies or elves substituted by them surreptitiously for a human infant. According to legend, the abducted human children are given to the devil or used to strengthen fairy stock.
Will a legless changeling regrow both legs when it copies someone? I say no. The changeling can change their coloration, hair length, sex, height, and weight, but they can't change their number, arrangement, or function of their limbs, because nothing in the feature says they can or even hints at it.
Changelings are a species of elf-like demons with pale skin and pointy ears. They are connected to the forests in which they dwell. Changelings are known to place their young in the homes of mortals so they can grow up in safety.
Unlike ponies, changelings do not have cutie marks.
Changelings are thought to be an uncommon race—though their true demographics remain unknown, as may live their entire lives masking as other sentient races. Many places in the world fear changelings for their unique ability to assume the form, or 'profile', of nearly any person, indefinitely.
Other times, Changelings don't speak at all, or show a lack of intelligence, and tend to become violent, screaming and biting at their parents. Another sign of a Changeling child was unusual behavior such as jumping, dancing, and spinning.
If a savvy investigator gets suspicious of you, there's a method available to them that allows them to determine your guilt with certainty: the blood test. Changeling blood is different from human blood. It reacts to strong heat. If someone is allowed to draw your blood and heat it, you'll be revealed as a changeling.
Changelings are often very mischievous growing up, as they get older they tend to calm down and begin being more helpful. Changelings though do to their mischievous behavior are often depicted as evil creatures and sent by the devil to take the place of a human parents infant.