For all you up and coming Scholars, this scroll can be bought from Layton in The Eldieme Necropolis (S) at J-8. He carries the other SCH specific spells as well, all for <20k.
Layton will only have spells for you if there is a campaign battle currently going. Best to teleport from your past nation to Batallia Downs [S] and head south to the Eldieme Necropolis entrance there at (J-10)