I also encountered this today when I tried brewing Isgebind, though I was using Aeolian Edge on 99THF/49SCH.
Aeolian Edge was regularly hitting for about 500 damage, occassionally hitting ~4k (presumably Windstorm activation?) and SC Detonation (Aeolian Edge > Aeolian Edge) ~1k damage. With the exception of the occassional 4k AE, damage seemed to be completely unaffected by brew.

Boh
Phoenix
7/21/2013
12:30pm CDT