Side note: This is more or less a simplified version / original intent of a Magic item in a game I’m playing in. Though as of now in that game it works through activation (i think, and its probably an action like Detect Magic) but as it is a prototype on each activation the user needs to roll a d10(?) to see what happens out of the following things (can’t remember the exact odds for each, also probably forgotten a couple effects)

• Nothing happens
• Activates as expected
• The aura emitted from magical sources is blindingly bright
• The glasses help you see Magical things by making anything that’s not magical invisible to you

Glasses of Magic Sight While looking through the glasses, a faint aura appears in the presence of magic within 30 feet, akin to the Detect Magic spell (no action required). You also have disadvantage on Perseption checks and Investigation checks while looking through the glasses as the magical aura of the Glasses of Magic Sight obscure your vision.

Let’s be honest here, this is a tpk. Even if someone in the party has the Holy Hand Grenade, they sure as the hells aren’t remembering that they do.