User blog comment:Jopjopjop/Volume 19 Spoilers/@comment-77.253.101.192-20141123093720/@comment-1359322-20141123100020

Meaningless. For ASG with beings to function, they need to do a pact to lend their powers. Azazel did a pact with Fafnir for the Downfall Dragon Spear, Tsubasa's Twinkle Aegis did a pact with a fairy for it's power too. For Evil Dragons, they can't form such a pact, so even if they make them as a source, unless if the Evil Dragons is willing to lend their strength, which ultimately they won't since they just want to destroy.