In the new Sword Coast Adventure Guide for 5e, there is a small blurb about the Snake style of bladesingers who use a whip, and focus their magic on poison and disease.
Normally this would be enough information for me, but the current list of spells only has about 6 spell which have a damage type of poison or are related to disease in some way.
To better pick my spells, and understand this style of bladesinger (and why it's not using a blade), I'd like to read up on this style and understand the culture behind it a bit more. That is, which type of elves started it, which cities or forests it's from, etc.
What book can I find this information in, and if it's scattered across multiple books from multiple editions, where can I find a summary?
The only relevant thing I was able to find on Google was this (from one of the splat books on elves of 2nd edition):
The Bladesinger is always identifiable by his weapon of choice. Such an item is always ornate and beautiful, enhancing the Bladesinger's appearance in battle. not only are they easily identifiable by their weapon of choice and catlike grace, Bladesingers are decorated with their weapon guild's distinctive tattoo. each guild has a separate and unique tattoo depicting its style of weapon through an animal representation. Long swords are often represented by great cats such as lions or panthers, a whip would be shown as a striking snake, and so forth.