Abraxus
Abraxas is a demon that dwells in the Astral Plane. He is known for turning a witch's magic against them by reversing past casted spells. He is able to open portals between the astral plane and the Earth plane. He was able to steal the Book of Shadows from the Charmed Ones, and started reversing spells, summoning Jeremy Burns the Warlock, Nicholas, and the Woogyman and them all to attack the Charmed Ones. He can emit powerful force blasts. The Charmed Ones vanquished Abraxas by drawing him to a place of power and harnessing the energy of the equinox by reciting the words to the incantation to unbind their powers.
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Alchemists
Alchemists have the ability to transform anything, like water into gold and energy into matter, and can bring things back to life.
Alchemist's Tools
Essence Bearer
An alchemist would use a bottle such as this to capture and/or store a Life Essence. A well-made life essence can possess any living being but the essence is poisonous and will inevitably prove lethal to the being's host soul. If the alchemist chooses to include his own blood when making an essence, the essence will share the alchemist's powers.