As a reaction, which you take when a creature makes an opportunity attack against you, you position yourself to force your opponent off balance.
If the enemy’s attack misses, you can make one melee weapon attack against the target.
If the enemy’s attack hits, one ally within 1.5 meters of the enemy can make one melee weapon attack against the target.
You must use this maneuver before the enemy’s roll is revealed.
If you or your ally hit, you add the stamina die to the attack’s damage roll for each additional stamina die expended.