Silverstream... the supposed next generation element of Laughter in MLP and with that Pinkie Pies Successor, and it makes sense, this character has several trates that make her similar, even if I would call her element of Curiosity or Positivity. And this video explains why I think that.

Character Developement Summarys: https://www.youtube.com/playlist?list=PLiD0mE8ez-B5-rC-uocYITSIsYtUiDlDy

Last Character Developement Summary: https://youtu.be/dgC5At1fubQ