Unstable Essence

Unstable Essence is a buff from the 2-piece "Nightmarish Power" bonus of the Dreambane armor set: final blows to a challenging combatant or higher-ranked target grant it, and while you have it you gain grenade and melee stat bonuses. The 4-piece bonus "Nightmarish Resilience" makes rapid weapon damage or final blows heal you and begin health regeneration while it is active. The set drops from activities on The Moon. See Dreambane Cowl.