unfortunately as drake noted, this is very similar to an existing idea (with the dive being one turn only rather than acquiring the skill as in the other card). as others have suggested, changing it to a permanent may help, but my 2
would be that that would still not be sufficient difference. if you were to change it to a permanent, have it grant airborne permanently and something else for 1 turn (or permanently), that may help distinguish it.
on a side note- avoid using punctuation in card names, aside from apostrophes where applicable (as in "Thor's Rage" or something of the sort)