You imbue yourself with temporary protection from harm.
Prerequisite(s): Ability to cast 3rd-level spells.
Sometimes you just take a few more hits than you intended to. Whenever you cast an enhancing spell of 3rd level or higher, you can spend an immediate action to gain temporary HP equal to 10% of your maximum HP, +1 additional temporary hit point per level of the highest-level enhancing spell you can cast. These temporary hit points last for 1 minute and stack with other sources of temporary hit points. As a secondary benefit, you gain a +1 competence bonus to your caster level when casting enhancing spells.