Trail effect

[pdts]

.

 

[Lobster]

like footprints?

 

[iNsaNe]

Or like the smoke smudges in DotA?

 

[pdts]

.

 

[Lobster]

Let me look.

 

[iNsaNe]

Events - Every .5 seconds of game-time
Conditions - Terrain Type (@ Position of Your Unit ) Equal To Your Terrain
Actions - Create a Lava Doodad @ Position of Your Unit

Maybe this helps, it's not exact.

 

[Lobster]

Under the enviorment section there is a change terrain type action.

 

[iNsaNe]

Events - Every .5 seconds of game-time
Conditions - Terrain Type (@ Position of Your Unit ) Equal To Your Terrain
Actions - Create a Lava Doodad @ Position of Your Unit

Maybe this helps, it's not exact.