I've got a few opinions on the Three Eye drug and are ole friend Victor.   Victor Sells didn't seem smart enough to have created the drug on his own and what were his motives for making it at all?  He already had the Beckitts for financial support so it wasn't for money.  Apparently it was incredibly addictive and as Harry explained the after affects of seeing the world as it truly is would leave you insane.  Not to mention a target for any magical creature that wants to keep itself hidden in society.  Also we learn from Changes that the spell was Victor was using to rip out people's hearts is the same spell that the Red King intended to use against Maggie Jr and her blood line.  But we don't know that it originated from the Red King.  It makes sense that whoever taught Victor Sells the curse probably taught him how to make the Three Eye drug also.  But I don't see why the Red King would give anybody the ability to see past their flesh masks least we have another Stocker-geddon like what happened to the black court.  I don't even think the White Court would want this.  They would be almost as vulnerable as the Reds.  Another thing, we never see the Red King use magic, just his will.  My opinion is that the Red King and Victor Sells learned about the curse from someone else, someone who wants the vanilla mortals to be aware of how the world truly is.