Ultimate Power

The Charmed Ones have faced many Ultimate powers.But,the last one was the most powerful of all and they almost died trying to defeat it..

Billie and Christy
At the beginning of eighth year,since the sister became witches (for Paige it was fifth year),they met Billie,a young witch and Paige`s new charge.Billie has become a witch recently,it was obvious that she is very powerful.At first she showed telekinesis and levitating,but later she developed projection.Billie worked with the sisters and learned about magic.She then found her long lost sister,Christy.It was revealed that Christy is the Ultimate Key.She strong powers,telepathy and pyrokinesis.Soon,Christy convinced her sister that the Charmed Ones are evil and that it was their destiny to stop them.Together,they were really powerful,just as the Power of three.but the Ultimate power was destroyed,when Billie realized that Christy was brain washed,and killed her sister,in self-defense.