For all i know it's working as intended
Blizzard does have a weird sense of humor
and it might only work on party members
i cant check, my death knights in Zangarmarsh and noone else is
But beat someone in a duel.. or someones who's just lost a duel
and cast hysteria on them
"induces the friendly unit into a killing frenzy for 30 sec"
basically they lose 1% of their maximum hp every second
and they can die from it
just thought id contribute that
have fun
hope it's not a repost