That’s still a high-magic trope that would conflict with the setting as outlined. Regular access to magic weapons results in a setting that’s not low-magic, as magic essentially becomes common and readily available. This is in contrast with this game, where magic items will be rare and hard to get so you’ll only find a couple per playthrough and not reliably be able to get the items that you want. It’s not just a matter of power, but scarcity. Trying to shift the focus to them being an engineering feat also doesn’t work, as that undermines the established technological level and causes contradictions. There’s settings that make it work, but they’re not low-magic and they don’t try to match real cultures.