As the Charmed Ones, one of us had the main primary power to have visions of the past, present, and future - me - one of us could freeze things - Piper - and one of us could move things - Prue. After Prue died, we discovered we had a another sister who was our half sister - Paige. She had the power to move things, but her father was a Whitelighter...a guardian angel for good witches and good people. So essentially, she was part witch and part angel, which changed how she could do certain things.