They look like waking scrolls. They are labeled PvP scrolls I believe. Not sure if they are uneffective in PvE. They say they petrify the target. Dunno if its % based or lands every time.
I was soooo tempted to buy them, but I really couldn't believe it wasn't a scam. Or my eyes playing tricks on me. I had never heard of the scrolls before. They weren't in the patch notes (as far as I know). Just seemed too weird.
Last year of so I got some on drop. don't remember what tho, and used them on what i don't remember with no success.(tried them on mobs, invalid target, tried on purple flagged invalid target not sure if i need to be flagged for pvp either, waiting for a red to test on next)
These 3 I have now i'm almost sure i got as drop in Vally of the Saints..
nothing shows in data base any where, and i know they are not new do to the fact in getting them last year