On/off dummy spell? (Fataled)

[FailsWithTails]

What would be the recommended strategy for making a dummy spell for an ability that turns on and off?

A while back, I made a Dread Eye unit for my Altered Melee. It was by default invisible, with an inactive slowing aura named "Intimidating Presence". There was an ability you could turn on and off, which enabled and disabled visibility as a method of activating and deactivating its slow aura.

When I tested it in single player against creep, it worked. As soon as I tested it in multiplayer with my older brother though, the game Fataled as soon as I caught him creeping and decided to reveal my Dread Eye to screw up his creeping. I figured it had something to do with using non-permanent Immolation's on/off as a dummy spell in conjunction with triggers to grant and remove the UD shade's Ghost ability. Any possible explanations for the Fatal would be nice. I've since already deleted the Dread Eye and all related abilities and triggers, but I still mostly remember how it worked, and I might be able to find the Dread Eye lingering in an older save version.

 

[idodik]

Yeah, Non-perm Immolation isn't a very good idea to base spells on. Have you tried Divine Shield? There's a checkbox that decides if the user can stop the shield, so it might prove useful for this. Still, this isn't a good idea.
I'd recommend creating two abilities - one to turn on sneak and one to turn it off. When sneak is activated or disactivated use triggers to replace the abilities and to create the effects of the spell.
By the way, the first priority spell for sneak should be Wind Walk, despite the time limit. Have you thought of that?

 

[FailsWithTails]

Hmm... Thanks for the tip and info. I'll probably stick to making separate on/off skills and use triggers to swap them around when used.

I don't really know much about spell priority, though. Know of any tutorials in particular where I can read up on it? I'll look around later for myself, but after I finish the unit/ability at hand. I'm the kind of guy that once I get sidetracked, it could be hours to days before I realize what I left incomplete.

 

[idodik]

What I meant by first priority was that Wind Walk is the most typical spell to base sneak abilities on.
This is a good tutorial about the uses of abilities: http://world-editor-tutorials.thehelper.net/cat_usersubmit.php?view=24502