I exported a list of spell info. It contains all of the spells that were added before December 2006.
http://decal.acasylum.com/download.php?file=spells.csv
(it's easiest to read if you open it in a spreadsheet program like Excel)
If you need info about newer spells, you'll need to use a program that can read AC's data files - I'm not aware of which ones currently work and which don't.. maybe someone else can give you the name of one.
Decal has a component called SpellFilter that does that, but you'd need to write a plugin to use it. That's actually how I generated that list. You can try using the plugin I wrote, but I haven't looked at it in 3 years, so I'm not sure what its state is. To install it:
1. Download it to its own folder (e.g. C:\Games\Decal Plugins\SpellsToFile\):
http://decal.acasylum.com/download.php?file=SpellsToFile.dll
2. In Decal, click Add, then Browse... and find the SpellsToFile.dll
3. Log in once, then log out and uncheck the plugin in Decal.
4. Find the spells.csv file in the folder where you put SpellsToFile.dll.
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[LotRO] Digero (Guardian), Digrim (Burglar), Dignite (LM), Azrea (Hunter) - Landroval
[AC] Digero, Lyera, Draxxe - Leafcull (Retired)
[CoH] Devil's Zealot, Scinta, Izzard - Guardian (Retired)
Digero's AC Decal Plugins:
http://decal.acasylum.com