Wizard School Specialization

You must be a wizard to take this feat.

When taking this feat, you become a specialist in your chosen school of magic based on your arcane tradition. If you haven't chosen a tradition or belong to one that isn't one of the basic schools of magic, then you may choose one of the basic school of magic to specialize in. You must also choose two other schools of magic, divination excluded, that you will lose the ability to cast spells from as your knowledge of those schools grow decrepit. Otherwise, you gain the following benefits:

• Increase your intelligence by 1, up to a maximum of 20.
• You gain an additional spell slot for every spell slot level you have access to. These additional slots can only be used to cast spells from the specialization gained through this feat. 
• The time and cost it takes for you to copy spells for your specialized school is halved. This can be stacked with arcane tradition level feats to become a fourth the time and cost.
• Any arcana checks made against spells or sources involving your specialized school are made with advantage.