From Pathfinder #190: The Choosing, which isn't enabled.

The Paladin

ITEM 20

UNIQUE ARTIFACT HARROW-COURT INVESTED MAGICAL

Usage carried

Bulk —

Suit Hammer (Str)

Alignment lawful good

The Paladin represents righteousness and resolute defense. As long as you have The Paladin invested, you gain the Shield Block general feat. If you already possess this feat, you gain an additional reaction at the start of your turn that can only be used to Shield Block.

Activate envision

Trigger You fail or critically fail a saving throw

Frequency once per day

Effect Adjust the result of your saving throw up by one degree of success.

Pathfinder #190: The ChoosingOGL