Fortification Item 12

Pathfinder Core Rulebook (Second Edition), page 582

Category Runes; Price 2,000 gp; Usage etched onto medium or heavy armor

A fortification rune wards against the most deadly attacks. Each time you’re critically hit while wearing the etched armor, attempt a DC 17 flat check. On a success, it becomes a normal hit. This property thickens the armor, increasing its Bulk by 1 and the Strength required to reduce its penalties by 2.

Type fortification; Level 12; Price 2,000 gp

Type greater fortification; Level 18; Price 24,000 gp

The flat check DC is 14.