Personally I'd leave it alone unless you can be absolutely sure of how it's been fixed on. I wonder whether it is stuck down given the heat it's subjected to. If it is mechanically fixed it won't have been designed to be removed and there's a good chance of damaging either the decal or the fitting on the cam cover it attaches to.
If it is stuck down I'd want to know what with and whether I could source more of the same substance to stick on its replacement before reaching for the pry bar.