Prerequisite: Alchemist 6, darkness bomb discovery

Benefit: The alchemist’s bomb creates shadows as deeper darkness, lowering the light level in an area equal to twice the bomb’s splash radius for 1 round per level. A creature hit directly by the umbral bomb has its energy sapped by the magical darkness, making it exhausted for 1 minute. Creatures caught in the blast radius that fail their Reflex save are fatigued for 1 minute; this cannot make a creature already fatigued become exhausted.