This is pretty simple actually, though it probably suggests that I need to get a full night's sleep. I was looking through the rules to make sure I can run an upcoming campaign with some of my friends, and got distracted by the spellcasting section. Specifically, I started looking at the elements and thinking of different ways to apply them.
With fire, water, and spirit I didn't have that hard a time thinking of interesting ways to use them. Water we see from both Ramirez and LTW in the series, and then the section specifically mentions entropy. Spirit covers all sorts of things like mind magic, kinetomancy(though personally I think this should fall under fire), and tons of other stuff. Earth magic you can manipulate metal and earth, electromagnetism, gravity, etc. Fire has heat manipulation, lasers, and probably a bunch of other stuff I can't pull out of thin air because I'm running on two or three hours of sleep. But, when I got to air I thought maybe pressure manipulation, and then... I kind of blanked.
So, what interesting things have you guys done with air magic that aren't immediately obvious?