Power Critical
(Deities and Demigods, page 51, DnD 3.0)
[General]
The deity chooses one kind of weapon, such as longsword or greataxe. With this weapon, the deity knows how to hit where it hurts when it counts.
Prerequisite
Base attack bonus +12, Proficient with weapon, Improved Critical with weapon
Benefit
Once per day, before making an attack roll, the deity can declare a single melee attack to automatically be a threat. If the attack is successful, the deity automatically rolls to confirm the critical hit, regardless of the actual attack roll.
Special
A deity can gain this feat multiple times, choosing a different kind of weapon each time. This feat can be taken as one of a fighter's bonus feats.