$begingroup$ If you have already got magic, why not only have a spell of Rune Hiding? It could be a rune as well. If everyone generally Possess a large blatant Rune Of Rune Hiding on each individual weapon, armor, defend, ect, it does not give a ton of knowledge. And https://magicrunevector27047.blogs100.com/22562251/rune-magic-tv-tropes-secrets