For 10 points, name this cosmic object which ancient Egyptians equated with the ripped-out left eye of Horus.
It's not childbirth, but one god of this domain had a name mistranslated as "placenta king," and displaced an older god of it named Iah. During the Middle Kingdom, this domain was represented symbolically by a lake at Karnak, and by the youngest member of the Theban Triad, who was the son of Mut and Amun. One god of this domain allowed Kheru-Ur and four other new deities to be born from Nut after losing one seventy-second of his power, elongating the year by five days. This realm was represented by Khonsu, who lost a gambling game to Thoth. This object also corresponds to a body part removed in combat with Set. For 10 points, name this cosmic object which ancient Egyptians equated with the ripped-out left eye of Horus.
It's not childbirth, but one god of this domain had a name mistranslated as "placenta king," and displaced an older god of it named Iah.
the moon