Surprisingly, it was a golden plate.

The golden plate became bigger and bigger, and finally, it reached 3000 meters in diameter. Not only that, but looming inscriptions flashed on the edge of the golden plate.

'Shit! What treasure is this?' Darryl was shocked and inexplicably excited at the same time. He saw that the flashing golden inscriptions were extremely ancient writings, and in the changing of those inscriptions, it seemed like they formed an extremely powerful magic circle. The array