The Iron Staff is a special meleeweapon exclusive to the Fatal Falls DLC. It has the unique capability of being able to parry enemy melee attacks using the first attack in its combo.
Details
Special Effects:
First hit in the combo can parry melee attacks.
On a successful parry the next hits of the combo deal critical damage.
Parried enemies take [60 base] damage and are stunned for 2 seconds.
Since this weapon has the unique capability to parry enemy melee attacks, it is able to synergize with any mutations related to parrying, such as Blind Faith and Spite.
The best way to get critical hits with this weapon is to hold off on attacks most of the time, only swinging when you have parried an attack or are very desperate. Being patient is crucial for success, as getting too greedy can lead to the player missing the parry.
Take note that the Iron Staff can't block or deflect projectiles, or parry explosions.