Enchanter Level 29 Research Spell: Feedback
 

or possibly looking for Velishoul's Pg 108

pst Kraack in game

I don't know about other people but I tend to sell most of the spells I research to the vendor in the Freeport bank (can't be bothered to run auctions). Sadly I think the vendors were reset this morning but I'll check to see what pages I have lying around when I get home from work.