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.
Yes, you can look like parts of different races if you want.
The changeling's ability gives them the ability to look however they want as long as you appear the same size and general shape. And appearing like another race even in just an arm is simply a matter of cosmetics (color, texture, characteristics, etc).
(2rp)Minor Flight: Changelings are able to fully use their wings at level 1.
Use Regenerate, a 7th level spell.
One of the effects of the spell is: The target's severed body members (fingers, legs, tails, and so on), if any, are restored after 2 minutes. If you have the severed part and hold it to the stump, the spell instantaneously causes the limb to knit to the stump.
The only other limitation is you cannot change your size category: as a Medium creature you cannot become a Large or Small creature - you can become a dwarf, you cannot become a gnome.
Changeling Reproduction
If a changeling in a female form conceives a child, she loses the ability to change her gender until after the child is born.
Changeling blood is green, unlike most other animals. Changelings, despite their thinly and seemingly fragile frame, are capable of surviving otherwise fatal injuries thanks to their magical abilities.
Unlike some of our invertebrate and vertebrate cousins with the capacity to regenerate limbs after traumatic loss, humans do not have the ability to regrow arms or legs lost to injury or disease.
Starfish are remarkable regenerative animals. Not only can starfish grow a new limb, but these creatures can also grow a whole new body from the lost limb. Several new starfish can grow from pieces of the original one. Now, that's amazing!
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.
WotC has confirmed that changelings are considered to have the Shapechanger subtype. So they are indeed immune to polymorph and can be affected by moonbeam.
Most often it was thought that fairies exchanged the children. In rare cases, the very elderly of the fairy people would be exchanged in the place of a human baby, so that the old fairy could live in comfort, being coddled by its human parents.
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 born from two changeling parents are born in their natural form: pale, slender, with colorless eyes and white hair.
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.
If a hydra is beheaded, a new organizer can form and prompt the animal to regrow its head. Meanwhile, the head that was lopped off will sometimes regrow the lower portion of its body.
Will humans ever be able to re-grow limbs or organs? Humans have the necessary genes to build limbs and organs. As embryos we develop and grow all the limbs and organs we need! However, we don't have the ability to re-activate these genes when injuries occur.
It is because mammals have more complex biological structures; limb regeneration would require sophisticated controls to ensure that limbs and organs don't grow out of control. Humans, for example, are already equipped with safety mechanisms to ensure that individual cells don't grow uncontrollably.
Although, interestingly enough, there are sporadic reports in the medical literature of people regrowing certain organs. For example, kidneys, and this is very rare, but there have been reports. We do regenerate our liver. So our liver is highly regenerative.
Humans have a similar situation to alligators when we are born: as teeth develop, we have our baby teeth and then replacement adult teeth in waiting. However, we do not have a stem cell that allows us to regrow our adult teeth.
Tissues that have limited ability to regenerate include bone, cartilage, and smooth muscle (such as the muscles around the intestines). Tissues that rarely or never regenerate include the nerves, skeletal muscle, heart muscle, and the lens of the eye.
Yes. From 'Races of Eberron', Page 45 : "A changeling can alter his or her gender (and reproductive abilities) as part of using the race's minor shapechange ability." "If a changeling in a female form conceives a child, she loses the ability to change her gender until after the child is born."
Vocal Replication: All Changelings can mimic any sound they hears using their voice. Voice Manipulation: All Changelings can freely manipulate their voice, allowing them to control their voices to imitate sounds of creatures such as animal noises and explosions or increase or decrease the tone of their voice.
Vertebrates, including mammals, birds, amphibians, reptiles and fish also have red blood because they too use hemoglobin as an oxygen transport protein.