True Gaian Degradation Elimination Field

When Touko heard last week that you had a Bounded Field that utterly no-selled Gaia's degradation, she didn't believe you. She got immensely excited when you showed her, but upon creating one for herself she discovered that it worked only for your magecraft. Something about tricking Gaia into thinking you were an Elemental or something. You couldn't stand to see that disappointment, so you got to work. The end result of your labor...was an invisibility field. Not to normal sight or perception, but to Gaia. She was utterly incapable of even noticing what was going on in that field. Now the only thing that would make magecraft fall apart in such a field would be the thaumaturgy's own errors. You proceeded to teach Touko the final product, and as thanks she gave you a kiss on the cheek! (Developed true Gaian Degradation Elimination Field! Extremely expensive, but with a Magic Core such costs are meaningless. Touko's back to cackling again.)