Fragment of the Prime

Overview

Fragment of the Prime is the Warlock class item (Warlock Bond) of the Atheon's Memory armor, from the Vault of Glass raid. It shares the set's bonus. The set's two-piece bonus, Radiolaria Breach, gives a temporary Health bonus and releases a burst of radiolaria when your shields break after you have picked up an Orb of Power. The four-piece bonus, Collective Power, creates an Orb of Power from sustained damage while you have a subclass buff active. Any four of the five pieces count, leaving the fifth slot open for an exotic, and the bonus also applies in PvP.

Acquisition

Drops from encounters in Vault of Glass. Each encounter has its own predetermined loot pool, and class armor drops only for the class you are playing in the raid. The raid can be farmed repeatedly, especially when it is in the featured rotation.