NB Assassins also have a feat called Bewilder. This page refers to the Bear Shaman's Bewilder feat.
Unconfirmed: 2min Cool Down.
Unconfirmed: If the combo is initiated but doesnt complete then there is a 40sec cooldown.
Combo with decent damage just lower then crushing armor but high stamina cost, .
Debuff duration 6s with 90% miss rate.