Shugden (Tib)
Dorje Shugden, also known as Dolgyal, is a worldly spirit previously practiced by many followers of the Gelug school of Tibetan Buddhism. His Holiness the Dalai Lama has stated that Shugden is a spirit, not an enlightened being or Dharma protector, as claimed by some, and strongly advises against it. See Lama Zopa Rinpoche's advice on Shugden.