Blood from the Mummy's Tomb (1972) on Netflix

Margaret Fuchs (Valerie Leon) is in bed dreaming: in an ancient Egyptian tomb some priests are burying Queen Tera (also Valerie Leon) who looks like Margaret. As part of the ritual they chop her hand off, take it outside and throw it to the jackals. They go back into tomb and place the lid on the sarcophagus. Outside, a jackal dies on the ground with its throat ripped and bloody as the hand crawls away. As the priests leave the tomb a sandstorm appears and they all die with lacerated throats too. The severed hand crawls away. Margaret awakes from her nightmare. Her father Professor Julian Fuchs (Andrew Weir) comes into bedroom to comfort her. Another man, Corbeck (James Villiers), watches then from the window of an empty house opposite.