My guess is pre-1750, if not older, via a really good preservation spell.

"It was bullshit,"

And now we know that Sakuya's cultural education proceeded apace after she vanished. (One of these days, Remilia will ask what happened, I'm sure. In the mean time, I get to practice patience.)

the carved Nordic knotwork border

Ah. No bets on what's in there; I never bet on a sure thing.

twin streaks of fire

88 mph? Maybe...

Peter Eng
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Insert humorous comment here.