But i have a different theory: Magmog is a follower of the Feca goddess. Its not unbiased as i have some sort of proof.
Evidence 1: Its resistance is ridiculously high which is a feca thing.
Evidence 2: Meteor is a spell that belongs to fire Feca's arsenal, as does the aura which is actually a Phelles harmor in disguise and it uses its Feca's knowledge to destroy enemy glyphs.
Evidence 3: The armors dropped all give a rebound status pretty much just like the feca passive.