Aberration-Bane Caster

You can apply your specialized knowledge of hunting aberrations to make your spells harder for these monsters to resist.

Prerequisites: Caster level 4th, gillman, favored enemy (aberrations) class feature.

Benefit: Add half of your favored enemy bonus against aberrations to the saving throw DC of spells that you cast against aberrations and on caster level checks to overcome the spell resistance of aberrations.