Prerequisites: Character level 11th, sylph.
Benefit: You no longer need to breathe. You are immune to effects that require breathing (such as inhaled poison). This does not give you immunity to cloud or gas attacks that do not require breathing, such as cloudkill.
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.