It was Sora, the trickster Tengu that first learned of the best method to defeat the hordes released from the dungeons. The intelligent species weren't mindless like the crazed, only driven insane and forced to the peak of rage by the effects of the spell. So, her first idea was to mind control them and turn that against each other. But what she found when she tried was even better.
The four dungeons within Blood Sands Castle had opened at the same time. The dragons had immediately flown away, maintaining enough of their sanity to realize how much time had passed and wanting to regroup and recover, and the Synthetic Seraphim that the two mischief makers had left behind simply flew to the top of the tower to watch the show while the humans, dwarves, and elves were all tossed into the castle grounds in utter confusion and battle lust.