Episode 4 of "Sabrina, the teenage witch"
s01e04 Terrible Things

Sabrina makes three wishes come true for her unsuspecting friends: Jenny gets elected student president, Harvey becomes a football star, and Mr. Pool becomes rich (by discovering how to change lead into gold). But she soon learns the truth of her aunts' warnings that one shouldn't meddle with the fate of others: Jenny is crushed when she learns the student president is merely a rubber stamp assistant to the principal, and resigns in favor of Libby, Harvey really can't play football and is injured on the field, and Mr. Pool's success at alchemy turns him into an obnoxious blowhard. Sabrina is faced with the ominous task of explaining her error to the Witches' Council. Meanwhile, Salem must perform community service as part of his sentence.