By completing strenuous studies, you have broken through the mental barriers that made it hard for you to prepare spells from one of your opposition schools.
Prerequisite: You must be at least a 9th-level Wizard to select this discovery.
Benefit: Select one Wizard opposition school; preparing
spells of this school now only requires one spell slot of the
appropriate level instead of two, and you no longer have the –4 Spellcraft penalty for crafting items from that school.