Type: Trait
Source: Unearthed Arcana
You have a gift for casting spells from a certain school. Although your spells from this school are more potent than those of other casters, you are not as effective at casting spell from other schools.
Benefit: Choose a school of magic. Add 1 to your caster levels when casting spells from that school. Drawback: Reduce your caster level by 1 whenever you cast spell that is not from your chosen school.