UnbowedSource Armor Master's Handbook pg. 28
Aura moderate conjuration and evocation CL 9th
Slot armor quality; Price +5 bonus; Weight —
DescriptionWhen the wearer of unbowed armor would be reduced to 0 hit points or fewer by an attack that deals hit point damage, the wearer can negate all of that attack’s damage as an immediate action. Using this effect permanently destroys the unbowed armor and causes it to explode in a shower of metal shrapnel, dealing 1d6 points of piercing damage per point of armor bonus to AC granted by the armor. This damage affects all creatures within 10 feet of the wearer (but not the wearer herself). A successful DC 20 Reflex save halves this damage. The unbowed special ability can be applied only to heavy armor.
ConstructionRequirements Craft Magic Arms and Armor, breath of life, shatter; Price +5 bonus