In my current ongoing game I have it equipped on Shadowheart and I don't think I've seen it blinding a single undead in the last 10 hours or so roaming the Shadow-Cursed Lands.
To be clear I'm not saying that every single undead or fiend or whatever is resisting the effect.
I'm saying that I didn't see a single one of these creatures having to roll a check to begin with.
Still, the description of the item clearly includes the effect, so I doubt they just stealth-nerfed it.
EDIT- Fixed a couple of typos, assuming this edit will save successfully.
Last edited by Tuco; 04/01/24 12:18 AM. Reason: typos
