Let's take Boom//Bust and BloodBraid Elf for example. The current ruling is such that if you cascade into Boom//Bust from BloodBraid Elf you are allowed to cast the Bust portion of the card because you can technically cast the Boom portion since it is the same card. I get the logic behind it but it was poorly concluded because this is becoming a problem in the modern format or I wouldn't be here. Instead of banning either card just change the ruling so that you are only allowed to cast the portion of the card that actually costs less than the card that has cascade. This is way more balanced and you won't lose the deck archetype in doing so. It'll just shift a bit. I'll keep posting this until someone changes the rules or I get kicked off this site. I spent 15 minutes creating a profile and all, just so I could complain here.