Beware What You Wish [2001] paperback

Wishes are being made all over San Francisco: a candidate for office wishes for a less formidable opponent, a little girl wishes for a horse and Phoebe wishes she could foresee more calamities so she can prevent them. Soon she's having more visions than she can handle - and the sisters are exhausted from racing all over town to avert disasters. Finally Phoebe refuses even to leave the housel A strange spirit has been released from its stone prison and the power of the Charmed Ones may not be enough to stop an impending cataclysm.