Tenebrous Magic

An Umbral Court agent receives Tenebrous Spell (Inner Sea Magic 15) as a bonus feat at 1st level, and can apply its effects to his spells without increasing their effective spell level or casting time. In addition, if the spell has the darkness or shadow descriptor or is of the illusion (shadow) subschool, the spell’s effective caster level and any associated save DCs are increased by 2 (instead of 1), and any attempts at dispelling the spell in darkness or dim light take a –4 penalty on the dispel check (instead of –2).