....sersi turn Sprite into human. Does that mean Sprite can't be reborn if it's followed the comic lore

You posted this 3 times.

Now, the answer is simple and obvious. Even a child would get it. Uni-Mind connects minds of Eternals and enhances their abilities.

And it goes without saying that human = mortal.

@Lagvaldemag lol idk what happened my chrome isn't responding