Ishtar also established her status as the City Guardian God of Uruk, and the scale of the temple gradually surpassed that of Heavenly God Anu.
But good times didn't last long. The succeeding fifth king of Uruk, Gilgamesh, was the grandson of Heavenly God Anu. To elevate his grandfather Anu's status and the sanctity of his own bloodline, he sought various ways to belittle and malign Ishtar, the original City Guardian God, eventually seeking to expel Ishtar from Uruk.
Risking great danger, Ishtar had seized the Heavenly Destiny from Earth God Enki and gifted it to Uruk, yet now it was to be snatched away. Ishtar refused to swallow this indignation, and in a fit of rage, unleashed the "Heavenly Bull", causing a seven-year drought in Uruk, taking revenge on Gilgamesh and the Sumerians, venting her dissatisfaction.
However, with the help of his friend Enkidu, Gilgamesh managed to slay the "Heavenly Bull" together.
Unbearably enraged, Ishtar went directly to confront Heavenly God Anu.