The Power of Three is the collective power of the Charmed Ones that increases their magical strength. Their spells are more powerful, and it allows them to fight and vanquish upper-levels demons and to achieve supernatural feats (such as killing the Harbinger) which cannot be achieved by other witches.
In 2018, Marisol began the process of unbinding her daughter's powers before she was murdered. Their powers were activated three months later, when all three sisters reunited at Vera Manor but they could not access the Power of Three until they accepted their destiny as witches. Once the sisters all agreed, they used the Power of Three for the first time to vanquish the demon, Taydeus.
An Imposter Demon would later take Marisol's form to trick the Charmed Ones into helping it retrieve the Prism of Souls which was contained inside a mirror. The sisters found it inside a triangular box and used the Power of Three to open the box as well as escape the mirror they were trapped inside of.
A few days later, a shapeshifter went after Mel's girlfriend, Niko Hamada, which forced Mel to alter history in order to protect her. She and her sisters drew the Moirai symbol together, then Macy and Maggie cast the spell, which altered events and everyone's memories but theirs.
- Unlike the original series, the Veras had a choice as to whether or not they became the Charmed Ones. The Halliwells did not get that luxury.
- Despite having obtained all of their individual powers, the Charmed Ones were required to accept their destiny as witches in order to access the Power of Three.
- Like the original series, the Power of Three is represented on the front cover of the Book of Shadows with the Triquetra symbol.