3e SRD:Whirlwind Attack
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Whirlwind Attack [General]
Prerequisite: Int 13+, Expertise, Dex 13+, Dodge, Mobility, base attack bonus +4 or higher, Spring Attack.
Benefit: When the character performs the full attack action, he or she can give up all regular attacks and instead make one melee attack at the full base attack bonus against each opponent within 5 feet.