Just looking through LDoN drops... has this item been changed to simply have a +20 Attack and +2 Regeneration effect? I know they re-labeled most other items with "Worn" effects such as this.
The effect 'Aura of Daring' was 20 ATK and 2 regen, Sony just removed the effect names and rendered them out to straight stats, a year or two ago. Foci now only appear when they have an effect beyond just numeric stats.