Well, the Miasma does know Gaia, and is trying to stop her from doing what he did to himself. (i.e abusing your power and not finding it's limits.)
I don't think that should hinder Domon's power, but if think it should then do it, he is your character after all.
I don't think that should hinder Domon's power, but if think it should then do it, he is your character after all.