Oh, Air, you enigmatic supplicant Element, you. I like the edition of Wings and Pandemonium quite a lot. I have no gripes about the naming, it just takes up the shield slot and gives you
wings. I won't even start on how I find Hope's name appropriate.
Steam Machine however, seems like an excuse only to use a Shard of Readiness without the Readiness. It's not nearly useful without it (I think). Still advocating the lowering of the costs somehow, some way.
Edit: Also, to further differentiate between Wings and Phase Shield, I think Wings should be Immaterial. As it is now, it's just a Phase Shield that blocks about half as many creatures with a longer effect duration.