A protecting mantra present in the Sanskrit Lotus Sutra: agaṇe gaṇe gauri gandhāri caṇḍāli mātaṅgi pukkasi saṃkule vrūsali sisi svāhā [ninety four] Therefore immediately after substantial "exercise" of a mantra, the aspirant gains the ability to invoke the deity at will or maybe determine him or herself with that deity. https://www.youtube.com/@Mahavidyabaglamukhi/