This is super solid but you lack card draw, and especially with your amount of discard and spell cast you need it. I would suggest four copies of cathartic reunion, you can refill your hand and gain discard options.
I feel dumb for not seeing this earlier, but you are right. Perhaps a mix of
Tormenting Voice\
Cathartic Reunion? That will help with discard, though you seem to have plenty of repeatable discard for your madness cards, so perhaps look at black, with
Succumb to Temptation or
Live Fast?
Live fast is nice, since it will power back up your Aether Hubs to ensure you have the right color when you need it.