Upon dealing damage to an opponent, increases CRIT Rate by 8/10/12/14/16%. Max 5 stacks. A CRIT hit removes all existing stacks.
In Game Description
This polearm was once cherished by a member of the old nobility that governed Mondstadt long ago. Although it has never seen the light of day, it is still incomparably sharp.
How to Get Royal Spear?
So far it’s only available in Paimon Bargain Shop.