Warning: This is 3.0 Edition material. It is possible that there is more recent 3.5 Edition version.
Inaccurate?

Thundering Rage

( Epic Level Handbook, p. 68)

[Epic]

Your rage attacks can cause thunderous roars that can deafen opponents.

Prerequisite

STR 25, rage 5/day,

Benefit

Any weapon you wield while in a rage is treated as a thundering weapon (see the DUNGEON MASTER's Guide). The DC of the Fortitude save to resist deafness is equal to 10 + 1/2 your level. This ability does not stack with similar abilities (for instance, if the weapon is already a thundering weapon).