How to make Wind Walk slow a unit down?

[Zovc]

I'd like to have Wind Walk on my units in a map I'm making, however, I'd like to have it slow units down, but still provide the backstab bonus as well as the invisiblity it normally gives. Is there a way to do this?

 

[QirajiLord]

On the movement increase field, double-click it while holding shift, and then you can insert negative values (-.1, -.3, -.4, etc.).

 

[dansaDisco]

Also, before being able to use the solution Qirajilord posted you need to do this:
Click file > preferences > and check the box where my arrow points at :]

 

[QirajiLord]

Nice, I never knew that you had to do that! My answer probably would have confused him more if you hadn't pointed that out

 

[Zovc]

Thanks, guys! Will I have to shift-double click if I check that box?

 

[QirajiLord]

I think you would still have to, yes, but even if it isn't actually required, it won't hurt to do it anyways.