[Endoperez]

There are few weird things with that. First, it'd cancel any possible negative Astral effects as well as good.

It'd cancel out Luck and Body Ethereal cast from AoE 1 spells.

I'm not sure how it would work. Perhaps negative Astral bonus. Then Pendant of Ignorance would make them lose Astral magic in strategic map as well. That would mean that they can be Mind Hunted. Mental Seal shouldn't make astral mages suspectible to Mind Hunt.