Hello, i thought i was well versed in weapon mods but this shield stumped me hard, dunno if cuz its OS but feels like some kind of mistake.
Celestial shield with +10 armor vs plants and -2 phys damage w/enchanted

I thought the armor +10 vs. X is equivalent to an inscription though i know you can only get vs plants as innate on OS.
I know for a fact that -2 phys w/e is the Sheltered by faith inscription.
In another example the DOA shields vs demons have essentially an innate +10 vs demons and a shield handle of fortitude +30.
Am i just an idiot or is this something crazy i stumbled upon?