Up to cause trouble no doubt!
Eurmal? Eurmal is a deeper old thing. Surpassed Ratslaff as the deity of Disorder, and surpassed Tylenea as the deity of Illusion. The Trickster appears early, small and comical, but was involved in so many world-changing events that some philosophers think the Trickster is somehow tied to the Gods War itself.
Waha is a storm god ? Waha is the son of Storm Bull. He may not be associated with the Air Rune, but he certain is part of that big group.
The Theyalan approach to mythology is much more widely spread than First Age Dara Happan, which in turn is FAR more widely spread than the Pelandan hill stories. The Theyalan mythology has incorporated many Pelorian gods since the late First Age (such as Yelm, Lodril, Polaris, Dayzatar, etc.), and then the God Learners standardised names.
If a cult is known by varied names of significance, those are listed. By significance I mean it has appeared in a canonical text under another name, that’s usually going to get listed. But don’t expect to see a lot of names mentioned only in early First Age texts – as this book is from the perspective of now.
The modern cult of Bisos is going to be very similar to the cult of Storm Bull among the Orlanthi. Remember, Bisos in the Entekosiad is describing stories from the perspective of the early Pelandans.
However, since then that area was part of the Second Council, settled by Theyalans, and even had Praxian nomads ranging around there! And later the Empire of the Wyrms Friends reinforce this, encouraging the cult in Brolia, Vanstal and Baloris. The Storm Bull cult picked up lots of little Bull cults such as Bemur, Tawal, and Bisos. The Bull Dynasty worshiped a god that we’d all easily recognise as brutal Storm Bull. So much so that in Greg’s notes Vanstal is known as Urox-land by 1150-1200.
There are two active “Earth Goddesses” – Ernalda and Dendara. Pelora who gives the land its name is a Grain Goddess. She’s all about fecundity, fertility, and agriculture, while Ernalda and Dendara are that and much more as well.