Some Magic Circuits were even beyond Merlin's ken.
Forbidden magic was rarely circulated on the market, especially the Mysticism of Chaos magic, which was virtually nonexistent.
Add to this the strict crackdown by the Order Church, and Chaos Magic was basically in a situation where it had a price but no market.
Common saints had no access to it, and Merlin, being confined to Heaven, was even less able to obtain it.
For the copycat oddity that was Merlin, the quality of the magic itself wasn't important; what mattered were those Chaos Magic's Magic Circuits. Once he copied the Magic Circuits, he could create even stronger magic.
Women might deceive the God of Law, but magic never does.
The Holy Light in Merlin's eyes grew ever brighter. To the God of Law, these forbidden knowledges were more attractive than a girlfriend. His inspiration for plagiarism burst forth like a spring as he waved to An Su, "Bring it closer and let me have a look."