Steadfast Determination

(Player's Handbook II, page 83, DnD 3.5)

[General]

Your physical durability allows you to shrug off attacks that would cripple a lesser person. Rather than depend on agility or willpower, you use your raw toughness to survive.

Prerequisite

Endurance

Benefit

You can use your Constitution modifier in place of your Wisdom modifier on Will saves. You do not automatically fail Fortitude saves on a roll of natural 1.