Academy
The Academy makes the Mage class available as an heir choice after at least one point is invested in the Mess Hall.
How it works
The guide lists the Academy as a one-level upgrade costing 100 gold. It becomes available after putting at least one point into the Mess Hall. Its stated effect is to unlock the Mage class. No specific spell, talent, stat bonus, or combat restriction is supplied for the Academy entry.
Read the supporting references
A source-bounded reference to ten named Rogue Legacy 2 Manor upgrades and their described effects, prerequisites, and level counts in the IGN passage. It does not establish current patch status, exact costs beyond quoted descriptions, comparative effectiveness, or complete game coverage. Guidance explains the referenced mechanics; it is not a tested damage ranking. Check the stated edition and source version before applying a patch-specific detail.