Perfect Multiweapon Fighting

 
Prerequisite(s): Character Level 21+, Dex 25+, three or more hands, Greater Multiweapon FightingMultiweapon Fighting
 
Benefit: The character can make as many attacks with each extra weapon as with his or her primary weapon, using the same base attack bonus. The character still takes the normal penalties for fighting with two weapons.
 
Special: This feat replaces the Perfect Two-Weapon Fighting feat for creatures with more than two arms.
 
Source: Epic Level Handbook