Trigger Help!!

I need to make a trigger like this:
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Event: Unit enters (Rect)
Condition: ---
Action: Unit dies
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...But I have exactly 4252 places i want to put it (Its an escape from hell map i.e. step on lava = you die). I know there is a way to put it all in one trigger (with variables?), but im still kind of confused. Can anyone help me on this?

ok, this might take awhile, but it wont lag like a bitch..

Just add more events, there should be a way to do this with an array, but Ive never tried so im not sure how that way would work.