A number of times per Long Rest equal to the Tier of the armor, you can either make a Defense saving throw in place of a Reflex or Fortitude saving throw, or a Will saving throw in place of a Defense, Reflex, or Fortitude saving throw.
You can spend 1 charge of either Inspiration or Mana Flux as a Free Action on your turn to ignore the effects of the Incorporeal boon of your target when attempting to Strike them with an Unarmed Strike or Natural Attack, or to perform a Grapple, Trip, Disarm, Shove, or any other physical Maneuver against them.
Whenever you would make a Reflex saving throw against a weapon attack from an Incorporeal creature, you can choose to make a Defense saving throw instead.