Queling Strike and Spells!

[Brigandier]

-150 damage equivalent worth of enmity when used with a spell. Static regardless of damage as long as you produce at least 150 damage. Works on spells and non-autoattack melee attacks. Actual 'use' of the quelling strike buff produces 19 enmity so you get a net -131 effect per use.

Legit. Quoted in the guide.