Wyatt Halliwell, Piper & Leo's son
Avada Kedavra, the killing curse.
Minerva McGonagall is more powerful than Amelia bones
The president isn't the most powerful person in the world. God is. Presidents are the most powerful and important people in the USA.
Most believe it to be Harry Potter, but it might have been someone else.
Alyssa Milano played Phoebe Halliwell in Charmed.
Avatars, consider that they can control time they can eliminate threat before it's get to powerful...
no
the biggest and strongest dragon.
The Witch of Endor, also known as The Medium of Endor, is the most famous biblical Necromancer. As of who is the most powerful, I do not know.
Circe. Or Morgana. You chose.
Technically, if you are going by what was said during the course of the show, Billie's projection power is the Ultimate Power, implying it is the most powerful gift one can possess.
Charmed - 1998 Witch Trial 2-1 is rated/received certificates of: Hungary:12 Mexico:B USA:TV-PG
Charmed - 1998 A Witch in Time 5-8 is rated/received certificates of: Hungary:12 Mexico:B USA:TV-PG
Charmed - 1998 Love's a Witch 6-5 is rated/received certificates of: Hungary:12 Mexico:B USA:TV-PG
Charmed - 1998 Witch Wars 6-21 is rated/received certificates of: Hungary:12 Mexico:B USA:TV-PG
Charmed - 1998 Payback's a Witch 8-12 is rated/received certificates of: Hungary:12 Mexico:B USA:TV-PG
In the "Charmed" episode, "The Bare Witch Project", Lady Godiva is played by actress Kristen Miller.