The Hist as it is known in current lore pre-dates Avatar. The original lore from 1998 was retconned a little in Morrowind and substantially in Oblivion (2006). Avatar released in 2009.
AvalonRanger wrote: »I couldn't understand logic of Solstice zone of Argonian.
They just put the eggs in the beach of ocean. There're no soul hist tree, even It's a salt water.
How can they hatch the eggs? They don't need hist god anymore?
Both the Hist and Avatar stuff reminds me a lot of some of the scifi stuff written by Ursula K. Le Guin. Stuff like "the word for world is forest" and "vaster than empires and more slow".