This might give problems with Wings. I could be wrong but I think all ground-bound creatures "miss" when there's a wings shield up.
I know you just mentioned on your notes that these misses shouldn't count towards the mirage effect, but the game mechanics say otherwise.
Also there's quite an overlap with the dragonfly ability, but since this is a permanent it shouldn't matter much.
Great work nonetheless, and I might be wrong about the things stated above.