Wolfpack Rounds

Wolfpack Rounds are Gjallarhorn's exotic intrinsic perk, introduced in Season 15: rounds split into tracking micro-missiles on detonation, and kills spawn an upgraded round. It is a heavy damage source against bosses. Pack Hunter grants Wolfpack Rounds to non-Exotic rocket launchers when teammates are near.

They are also the quest items in And Out Fly the Wolves. The quest starts with a round from the Grasp of Avarice dungeon, which you return to Shaw Han. You then need seven Wolfpack Rounds from powerful Fallen with yellow health bars in the Cosmodrome, bringing them to Shaw Han and Banshee-44.