… which has got into the ‘The subplots! They’re breeding!’ stage of the plot:
Idrian favoured all of his cousins with a look of bored disdain that was usually only seen in professional legal advocates and elderly cats. “You have no idea what exponential sequence means, do you? I’m surprised Ushantih hasn’t already bankrupted you all with a scam involving grains of rice on a chessboard.”
Ankaret Wells 
You have a true talent for understatedly scathing dialogue, m’dear! 😉
It’s Idrian. I love him dearly and hope others will too, but if you imagine Sheldon Cooper brought up in the retinue of Genghis Khan, you’ll more or less have the gist of him.