Let's compile a list of spell data that's unknown

I noticed when playing the valley of dissent map, how the mirror image spell did damage. So I used winMPQ and looked at the spell data, and noticed that the creators used a previously zeroed out field to make it so the mirror images did damage by adding a fraction into there.

Does anybody else have any interesting spell data finds for fields which were previously unused? e.g. summoning more than one water elemental, mirror images doing damage etc?

I have been goofing around with a few spells at a time but it's taking forever, and most of the fields when a number is put there do nothing. I was thinking it would be a great asset to the mod community if we could compile a spreadsheet of known spell effects for various columns in the abilitydata.slk file, so in the future instead of each person trying to figure out on their own what the various slots do they could reference a spreadsheet (or a forum thread) and go from there when modifying spells.

Maybe somehow we could even unlock some of the spells that don't seem to work right or are unused. It seems that when I dig into the various text files and the spell data, that blizzard left a lot of stuff unfinished that they had plans to use, or perhaps were left in from beta.

If you use Excel, no field is unknown, Blizzard programmers made comments on each cell telling what it was for