So here's what I'm thinking.
Pack Mentality - costs 50 beast gauge last 10 seconds.
Under the effect of pack Mentality certain warrior actions can be spread to other party members.
Vengeance - 10% reduced damage to party.
Thrill of battle - 10% increased max hp and healed for amount gained.
Equilibrium - 400 potency cure to all members within 10 yalms
Holmgang - bring target party member to you and their house cannot be reduced passed 1.