Vajramrita and the related forms of Amrita Humkara, Amrita Krodha and Amrita Kundalin (Amritakundali) are described in the Abhidhana Tantra in the Chakrasmvara Literature. They are rare iconographic forms and not commonly represented as a central figure in art. They mostly appear as part of an iconographic compendium such as the Vajravali of Abhayakaragupta, Bari Gyatsa, Sadhana-samucchaya, or in the group of the Ten Wrathful Ones. There are four forms of the complex deity that have the name 'amrita' in common. They are all grouped together in the Vajravali literature and described with a retinue of deities and a complex mandala. Several other forms of the deity, usually in a more simplified form, appear in other traditions. There are two deities similar in appearance that can cause confusion in identification: Humkara and Avalokita Samvara.