Yes, the Larian home-brew items are most definitely 'not D&D'. I pretend they don't exist, I used to sell them, but now I don't even pick them up. I noticed that they added an Ersatz's eye, though altered in abilities, from Xanthar's Guide. So, at least one of them looked at the 'common magic items' in that book. This item wasn't too bad, offering a positive and a negative to balance the power offered. But the rest, well, they're not even worth talking about.