Void Soul

This spell can only be activated by an undead being. Void Soul always takes up a cantrip slot, and once a user has learned this spell, they can never forget it. (This means they cannot remove it from their Cantrip slot.) This spell virtually leaves the user devoid of emotion and empathy through necromancy, granting the user immunity to the charm and frightening conditions, as well as forcing the user into any of the neutral alignments of their choice. While this is active, the user gains weakness to radiant damage.