Wonder Man
Can Veil have been smart enough to put her mist into a flying fish like Ironman told her to and regain her powers?
If the flying fish the mist is in can breath it in a bubble some while it floats it should be able to reach her in time to restore her full power.
Then she can be the one to spy on Korvac.
https://tse3.mm.bing.net/th?id=OIP.dOh_hpx_U1tyOUc_a0bQhQAAAA&pid=15.1&P=0&w=300&h=300
vs.
https://tse3.mm.bing.net/th?id=OIP.XEbmXgPOOpaZZpLzPeaTswHaLR&pid=15.1&P=0&w=300&h=300
If the flying fish the mist is in can breath it in a bubble some while it floats it should be able to reach her in time to restore her full power.
Then she can be the one to spy on Korvac.
https://tse3.mm.bing.net/th?id=OIP.dOh_hpx_U1tyOUc_a0bQhQAAAA&pid=15.1&P=0&w=300&h=300
vs.
https://tse3.mm.bing.net/th?id=OIP.XEbmXgPOOpaZZpLzPeaTswHaLR&pid=15.1&P=0&w=300&h=300