Qetsiyah

Qetsiyah (קְצִיעָה), now known as Tessa, is an extremely powerful witch, who is responsible for creating The Immortality Spell, imprisoning the Original Immortal, Silas, creating The Other Side and creating the Cure. Her desire was for Silas to join her on the Other Side for eternity, so her descendants created The Brotherhood of the Five to find, cure and kill Silas.