Mystic Woad

Racial Ability: Mystic Woad. This ability creates an item after ten minutes of work which renders the user Immune versus the Enraged​ and ​Feared ​statuses.
Periodic (Racial), Crafting (Consumable), Augment

Can this item be stored for later use, or is it immediately used?

After a Hibernian crafts it, can it be used by anyone to gain the effect, or can only Hibernians benefit from the item?

This ability (and all other crafting racials) create a permanent consumable item that lasts until used. Anyone may use the item.