With at least two pieces worn: After casting a melee ultimate ability, regenerate 15% adrenaline over 18 seconds. If this effect is already active, instead regenerate 20% adrenaline instantly, ending the regeneration effect.
With at least three pieces worn: The duration of Berserk is extended by 6 seconds, increasing its duration from 20.4 to 26.4 seconds.
With all four pieces worn: The player's maximum adrenaline is increased by 20% whilst wielding a melee weapon.
The Vestments of Havoc armour set averages tier 115 melee damage bonus across the set; however, the equipment tier of the bonus varies between individual pieces. The boots' tier is 121.6, above the average for the set.