From Pathfinder War of Immortals, which isn't enabled.

Mythic Resilient

ITEM 20

Price 70000 gp

Usage etched onto armor

Bulk —

Mythic resilient runes imbue armor with unrivaled protection from a wide array of effects. The armor grants a +4 item bonus to saving throws to the wearer.

Activate—Defy Obliteration (concentration)

Trigger You critically fail a saving throw

Effect Spend a Mythic Point; if the triggering save was made due to an effect created by a mythic monster, hazard, or other effect, it's a normal failure instead. If the save was made due to an effect that wasn't mythic, it becomes a success.

Craft Requirements Mythic resilient runes can only be crafted, etched, or transferred by a mythic character capable of making a Crafting check at mythic proficiency (such as by having the Artisan's Calling).

Pathfinder War of ImmortalsORC