Śivasaṃhitā 5.244

The vidyādharas are the masters of cosmic knowledge who move freely through the skies, possessors of the vidyā (sacred knowledge) that gives them their name. Becoming their lord (pati) implies having surpassed even the beings inhabiting the apex of available knowledge outside complete liberation. The ability to assume any form (kāmarūpitva) adds the dimension of total plasticity of being.

Aṣṭā-viṃśati-lakṣa = twenty-eight lakhs (2,800,000 repetitions), vidyādhara = knowledge-bearer (vidyā = sacred knowledge, dhara = the one who carries), pati = lord, master, husband (relationship of governance and care), kāmarūpin = one who assumes desired form (kāma = desire, rūpin = having form, manifesting in forms).

Kāmarūpitva (ability to assume any form) is the siddhi most clearly reflecting the nature of pure consciousness: if consciousness is the basis of all form, the yogi identified with consciousness can manifest in any form. Nāthas like Gorakṣanātha are celebrated for their transformations into various animal and human forms in their hagiographies, illustrating this siddhi in narrative terms.