Critical Power Attack (3.5e Feat)
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Critical Power Attack [General]
This feat allows you to increase your threat range when you sacrifice BAB for Power Attack/Power Bow.
Benefit: Every 5 points of base attack bonus sacrificed for power attack extend your critical threat range by 1 (in addition to normal effects of power attack).
Normal: Power Attack/Power Bow do not affect threat range in any manner.
Special: If you are using a two-handed weapon, increase the threat range by 2 for every 5 points sacrificed. For every 20 points of BAB sacrificed, increase the threat range by an additional 1 (or 2 for two-handed weapons).