Fusion Grenades have an additional charge and recharge from empowered weapon damage, with empowered weapon final blows granting more energy. Defeating targets with Fusion Grenades grant Rift energy.
<b>Starfire Protocol</b> - Stats, Exotic Perk, Catalyst & More
Exotic Chest Armor
13.4 billion years ago, the first stars kindled out of darkness, seeding the future of all life.
Fusion Harness
Source: Exotic engrams; extremely rare world drops.