Man in mirror makes people kill. From the 70s

The Jiuxian Witch and her Bloody Ghouls Clan (somehow you just know that these aren’t the good guys) are planning domination of the Martial Arts world. Standing in their way are two clans who posses a magic mirror each. The two clans enjoy friendly relations, but when one mirror is stolen and the blame seems to rest with the other Clan, suspicions and tempers run high. It’s left to the young renegades from each Clan to find the true culprit or culprits, and to ease the tensions of their families. Not to mention ridding the world of the evil Jiuxian Witch.

When a desperate young woman’s date takes a sinister turn, she must make a harrowing decision that could change the course of her life forever.

Employees at a cosmetics firm grapple with their respective desires by arguing with themselves in the mirror, ahead of their company’s anniversary party.

The sadistic tale of a lonely, mentally handicapped boy who befriends his reflection in an antique mirror. This demonic creature orders him to go on a murderous rampage to kill the people he loves most.

Scientist perfects a chemical unleashing the beast within, but before he can create an antidote, his neglected wife accidentally is dosed when he has to rush a batch home to keep it refrigerated. Her mild resentment of his endless hours at the lab accelerates into a torrent, after she gobbles pie on which the potion dripped.

A man watches himself in the mirror, but the reflection doesn't match his movements.

A man is plagued paranoia because of the man in his mirror.

An urban legend comes to life when a naive man decides to say the words in the mirror.