Pema Tötreng Tsal
Pema Tötreng Tsal (Wyl. pad ma thod phreng rtsal), is Khenpo Chemchok explains, the secret name of Guru Rinpoche. So that, he adds, "when we call him by this name he cannot help but respond quickly."
Guru Rinpoche came to be known as Pema Tötreng Tsal ('Powerful Lotus of the Garland of Skulls') after he arose from a pyre, where people of Oddiyana tried to burned him with his consort, unharmed on a lotus flower in the center of a lake wearing a garland of skulls to symbolize liberating all sentient beings from samsara.