Overwhelming Critical

Type: Epic
Sources: Dungeon Master's Guide v.3.5
Epic Level Handbook

Choose one type of melee weapon, so as claw or bite. With that weapon, you deal more damage on a critical hit.
Prerequisite: Str 23, Cleave, Great Cleave, Improved Critical (chosen weapon), Power Attack, Weapon Focus (chosen weapon).
Benefit: When using weapon you have selected, you deal +1d6 points of extra damage on a successful critical hit. If weapons critical multiplier is x 3 add +2d6 points of extra damage instead, and if the multiplier is x4, add +3d6 points extra damage instead. (Creatures immune to critical hits can't be affected by this feat.)
Special: You can gain this feat multiple times. Its effects do not stack. Each time you take the feat, it applies to a new weapon.