Tower of Books

The spears created by the magic circle disappeared after just a few moments, just so that new ones could be pushed out of the ground again. And then, the same thing happened once more. Again and again and again.

"Certainly, that would have killed even me at the time..." The old man muttered, surprised at how efficient this rudimentary magic circle really was. But in the end, it really didn't matter all that much anymore, Eisen just had to figure out why exactly these spears were here in the first place.

For that, Eisen had been using the mana-copy skill to save all the different sets of spears to see what he could do with them. He created high-quality visualizations of the huge copied spears and tried his best to figure out why he was shown these now.