This discovery can be taken by any alchemist who qualifies, though it is more common among svirfneblin alchemists.
Benefit: When the alchemist creates a bomb, he can choose to have it suppress light sources on the target. This extinguishes non-magical light sources carried by the target and dispels magical light sources for 1 round/level as deeper darkness.
Pathfinder Roleplaying Game Advanced Race Guide © 2012, Paizo Publishing, LLC; Authors: Dennis Baker, Jesse Benner, Benjamin Bruck, Jason Bulmahn, Adam Daigle, Jim Groves, Tim Hitchcock, Hal MacLean, Jason Nelson, Stephen Radney-MacFarland, Owen K.C. Stephens, Todd Stewart, and Russ Taylor.