Heart Essence of the Lake-Born Vajra, the Secret Accomplishment of the Great Guru' is a mind terma of Dudjom Rinpoche focused on Guru Rinpoche in the form of Guru Tsokyé Dorje, which was revealed in 1929. It is the main lama practice in the Dudjom Tersar lineage, and one of the four main terma cycles of Dudjom Rinpoche.

This empowerment was recently given at Chagdud Gonpa Rigdzin Ling by HH Dudjom Yangsi Rinpoche.