https://www.arcanewonders.com/arcane-wonders/name-that-expansionThere's a new set coming out with new cards including cards that are currently promo cards. The cards in the set are not thematically related to each other. Arcane wonders wants us to come up with names for the set and submit them.
Also, has Arcane Wonders considered the (IMO) most obvious thematic justification for having all those unrelated cards in one spell tome? I'm talking about Amadseer the cursed of course. I bet he's learned about quite a few spells on his travels, as well as how to cast many of them too. And he's probably willing to share some of his knowledge with other mages he meets on his journey.
This would also be an excellent opportunity for some more lore in the form of Amadseer's writing. Or failing that you could just compile the short stories he's already written in the lore section of the forums and put them in the set along with the cards.
