Your phantom remains partly immaterial even when fully manifested in ectoplasmic form.
Prerequisite(s): Phantom class feature, phantom with the incorporeal flight ability.
Benefit(s): Your phantom has a 50% chance of ignoring critical hits and precision-based damage when fully manifested in its ectoplasmic form, as if wearing armor with the moderate fortification special ability. This doesn’t stack with other similar effects, and doesn’t apply against attacks made with ghost touch weapons or weaponlike constructs made of force (such as a clenched fist, mage’s sword, or spiritual weapon).
Pathfinder Roleplaying Game Occult Adventures © 2015, Paizo Inc.; Authors: John Bennett, Logan Bonner, Robert Brookes, Jason Bulmahn, Ross Byers, John Compton, Adam Daigle, Jim Groves, Thurston Hillman, Eric Hindley, Brandon Hodge, Ben McFarland, Erik Mona, Jason Nelson, Tom Phillips, Stephen Radney-MacFarland, Thomas M. Reid, Alex Riggs, Robert Schwalb, Mark Seifter, Russ Taylor, and Steve Townshend.