I want to set a Hallucinate to die about 5 seconds after being made by triggers I tried to use the Set Energy trigger to 1% but it didn't seem to work. How would I do it?

Try searching next time: http://www.staredit.net/topic/9739/

Short answer: not possible.

Longer answer: you can make broodlings without a death timer (create unit, instead of create with properties), but there is no way to make a permanent hallucination, or set its timer to a shorter (or longer) length. Best you can do is use a trigger to kill it at a certain point. The hallucinated unit will still be affected by actions that apply to that unit type (but it will not be detected in conditions), so if you're hallucinating a type of unit that the player does not normally have access to, then you should have no issues with that approach.

Ok thanks.