I present to you a montage of awesomeness:
All that's really left now is to figure out how to add a custom skillbook to an NPC's inventory/droptable.
And then all of the balancing and playtesting.
Edit: Link from the earlier post (
http://www.mediafire.com/download/dautg95mnom75mh/Boss_Summons.zip ) now has the latest version of my WIP build.