How do you make bottomless merchants?

I want to see a unit (like a merchant) without the building effect under it (as seen in the Defense of the Ancients maps). How do you do this?

make a unit that doesnt have a splat (like the circle of power) into a merchant, and change the building's model any unit without a splat will do

Ah.. that seems logical. Thank you.

Dakan: What Models dont have this - to save some searching time >_<

all non buildable and the non merchants, usualy i just use the circle of power and increase its clipping size and change its pathing texture

The nuetral buildings work aswell.