Better Lucky than Good

(Complete Scoundrel, page 74, DnD 3.5)

[Luck]

You can succeed where others would surely fail.

Prerequisite

Character Level 6, any two luck feats

Benefit

If you roll a natural 1 when making an attack roll, you can expend one luck reroll as a swift action to instead treat the roll as a natural 20. You can use this feat once per day. You gain one luck reroll per day