I'm writing a D&D companion book for Hoard of the Dragon Queen (1489 DR), and in the final chapter, an unexpected ally would help the party. This ally uses the power of thunder and lightning to storm (heh, see what I did there) the flying fortress of Skyreach Castle.
Originally, this ally was just a previous character (a Storm Sorcerer) from my table. However, to publish the book, I'd like a more recognizable name. I tried to google for famous storm sorcerers, but didn't have much luck.
Are there famous and powerful storm sorcerer characters or characters from Forgotten Realms lore that could fit the description of a strong combatant that relies on the powers of storms to fight, and who could bring a fight to a flying fortress of Cloud Giants?
In the limit, I might use some name like Mordenkainen, even if it's not a perfect fit.
PS: if you find a character that fits the description, but shouldn't be alive this year, worry not! We can make an apprentice of that character, or a descendant, or something else. As long as it's a recognizable name that readers can look-up for more information, then it's what I need.