```
Merlin pushed his monocle up slightly.
A deep blue ring appeared in front of the glasses, and then a glowing auxiliary magic circle unfolded along with those twinkling runes, making it look like a virtual panel.
He focused intently on the grimoire in Aiwass's hands, and after a while suddenly furrowed his brows, revealing a puzzled expression.
...What is a Grimoire of Sin?
As an Angel Envoy of the Path of Wisdom, Merlin certainly had the ability to identify extraordinary items. In fact, during the time of the Round Table, Merlin was Avalon's best appraiser.
He could discern the effects of this item.
However, he didn't know what a "Phantom Card" or "Sin Card" was.
—Could this be the legacy brought by the Holy Entity?
"Aiwass," Merlin began very cautiously, "did you just... see anything special?"
"...Special?"
