I'm holding off on this because we are looking at a code solution to the issue. We're leaving it on the Skull of null because it fixes the issues some player had with the evolving nature of the item not attaching, and therefore the spell shielding doesn't work. The evolving item issue is not on the Polished Diamond Prism, so for that, we're holding off for a code based solution instead of a design workaround. The code solution didn't make the patch, and I have no particular ETA at this time. The fact that it blocked damage shields was not intentional AND more powerful than planned for the effect on the Skull of Null items.