Scarred for Life {Rewriting}

Before Lynn Moray, there was a witch. A powerful sea witch by the name of Cerys made herself immortal with a potion. With immortality, she claimed the whole ocean as her domain, determined to keep her rule forever. However, another sea witch prophesy that the witch would be overthrown by a mermaid born from a selkie during the height of the full moon on the day where the twins of the sky were equal. While Lynn grew up peacefully, the supernatural world was terrified. Mermaids left and right were disappearing while changelings, a race Cerys favored, were slowly taking over the ocean and land, corrupting whatever they could grab. Lynn and with the help of Jordan Waters must rise up and save what lost while meeting new beings along the way. There's magic! Adventure! And... love?