Good idea in general, but
is the wrong element for it mechanically, as
already has Momentum.
When Wings is going to be the only card that affects non-Airborne creatures, then your are right. But I hope that zanz doesn't create the Airborne-ability only to use it for one shield.
![Wink ;)](https://elementscommunity.org/forum/Smileys/solosmileys/wink.gif)
And the two other elements with only 1 Airborne creatures are
![Water :water](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/water18x18.png)
and
![Earth :earth](https://elementscommunity.org/forum/Smileys/solosmileys/../../../images/Misc/earth18x18.png)
. But Water doesn't throw something in the air. I could used Earth but I think that Earth doesn't provide enough power to throw a heavy creature high enough.
No, I think Gravity is the best element for this idea.
![Wink ;)](https://elementscommunity.org/forum/Smileys/solosmileys/wink.gif)