When she has matured into an adult, Menalippe, the Oracle of the Amazons sees a vision in which the Gods and humanity is in danger from Ares. Soon they are approached by the Gods and tasked with organizing a tournament in order to chose a champion, who will save them from impending Doom. Diana competes against her mother's wish and win. Athena then sends her a weapon, the Lasso of Truth forged by Hephaestus from the girdle of Gaea.
She is able to astrally project herself into various lands of myth. Her physical body reacts to whatever happens to her on the mythical astral plane, leaving her body cut, bruised, or sometimes strengthened once her mind and body are reunited. She can apparently leave the planet through meditation and did this once to rescue Artemis while she was in Hell.