Siddhis

[Sanskrit] Supernatural powers acquired through the practice of yoga, such as clairaudience, clairvoyance, levitation, supremacy over the body and mind, knowledge of a previous birth, dominion over the elements, vision of perfected beings, and the power of making oneself invisible. The supreme siddhi is enlightenment.

Himalaya has said:

Some who have come out of the East unto the West showing physical prowess and the siddhis have not yet internalized the living Word who is the Universal Christ. Thus, beloved, know that siddhis alone do not clear the path for the incarnate Word. Thus, seek to be one with avatara, incarnation of God, and then know that thy God in thee is the All-Power, as Above and below.

Sources

Pearls of Wisdom, vol. 33, no. 20, May 27, 1990.