Airbend rules say the Owner of the spell or permanent may later cast it again. This does not work correctly when an opponent casts a spell obtained through Outrageous Robbery.

My opponent cast Outrageous Robbery.
My opponent cast my Roiling Dragonstorm.
I cast Aang, Swift Savior in response, airbending the Roiling Dragonstorm on the stack

Expected Result: since the card started in my deck and I am it's owner, I should be able to cast it from exile for 2 generic mana.

Actual Result: the airbended spell is castable by my opponent only.

Platform:PC