Y2 Icebreaker quest found while running Crota. Steps below Sea of purple- Spawn 20 heavy amo drops in under a minute. Green with envy. Land 20 sniper shots in crucible without picking up a special amo crate. Photosynthesis- kill a strike boss without moving or picking up additional amo. Breaking the Ice- Dance in front of Xur for the duration of Vanilla Ice's Hit song "Ice Ice Baby" Clearly I don't have it yet but come Friday I will never use another exotic ever again.