My maze PLZ HELP

[Mapmaker2121]

I'm Wondering if theres in easier way to kill a unit if he steps off the path besides regions Plz Help
:?:

 

[Mecheon]

Give the unit lots of negative health regen only on blight and coat the outside of the path with blight?

 

[ragingspeedhorn]

http://www.wc3sear.ch/viewtopic.php?t=13984&start=0

 

[skullslasher]

I'm Wondering if theres in easier way to kill a unit if he steps off the path besides regions Plz Help
:?:

make a tower that has minimum range of the region.as the model put none itle be a zone indicator and make the tower do 9000000000000000000000000000 damage. Ive done it before