IS there any way to force a unit to fly?

[Scauldingpon]

I'm trying to make atleast in my map, when a unit starts an effect it begins to hover or fly. doesnt seems to work. do i need to make a nother unit that is a flyer and set it?

 

[wardenblack]

a

If you use the option with the Storm Crow ability yes the unit will fly and by fly I mean It will have height and will be able to pass over trees and water and such but in a normal walking animation with a shadow on the ground.
I still don't know if you can make it hoover or not. Basicly change its animation. I will require another model I think. I hoovering/flying one.