Not without clashing with your other spells, but the problem with limiting a spell to your boots is that if you lose your footing while walking on nothing you're gonna fall to your death.
Now, to make it clear, I'm perfectly fine with that.
Now, out of curiosity: would it be possible, through windsage, to spot where the interference is and weave AA around that?
There's no way to get the benefit of two different kinds of magic on the same place without bad things happening, period.
Assuming there wouldn't be a more flavorful/detailed breakdown if we choose to purchase one, how much for the equivalent of a 4+ Talisman?
These brushes with death, and learning the Seed isn't as good as I thought, have me spooked.
10 favours, and it would be incompatible with any magical protection or magical aura type spells.
Sometimes. It wouldn't be a flat bonus, it would make a huge difference in situations where being able to walk on air would let you escape and make no difference when it wouldn't.