(Cleaving) Drone Beast Nighelam is the end boss in the Heart of Chaos raid event. End raid bosses are hit for normal damage and the player has 2 hours to defeat them. It always begins with 1,700,000 hp.
Defeat (Cleaving) Drone Beast Nighelam to acquire Sabrina, Repaying Debt (UR).
Quote: "Grrr... Foe detected... Eliminate..."