silly quick worldbuilding note, but magic in this world is sooorta like radiation. idk how to explain it yet. but it is unfortunately similar enough that expeditions to the broken lands (i'll explain Later) can find actual radioactive artifacts (i know it doesn't reaaally make sense for these things to have survived but please it's Funny) as the magic detectors they use can mistake radioactive things for magical things, and the adventurers see it kill people via radiation poisoning and go "hmm... cursed object with tainted mana....... wonder if we can fix this, it was most likely something powerful before it's enchantments went haywire!" and again, they're similar enough that magic-sealing boxes can safely contain radioactive things (for a Time) so they bring it back and the archivists panic because "WHO GAVE YOU FUCKING POLONIUM????? OH MY GOD THEY'RE GONNA KILL THEMSELVES WHAT THE FUUUUUUUCK"