Unicorn.

You are Form 3, Unicorn: The Innocent.

"And The Unicorn knew she wasn't meant to go into the Dark Wood. Disregarding the advice given to her by the spirits, Unicorn went inside and bled silver blood.. For her misdeed, the world knew evil."

Some examples of the Unicorn Form are Eve (Christian) and Pandora (Greek).
The Unicorn is associated with the concept of innocence, the number 3, and the element of water.
Her sign is the twilight sun.

As a member of Form 3, you are a curious individual. You are drawn to new things and become fascinated with ideas you've never come in contact with before. Some people may say you are too nosey, but it's only because you like getting to the bottom of things and solving them. Unicorns are the best friends to have because they are inquisitive.

Which Mythological Form Are You?
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Thanks to Boi from Troi for the link to the quiz.