The Spirit Realm

Groupable Tier 1 = Scratched Hide armor (Dropped by Groupable Nameds)
Groupable Tier 2 = Druadic Hide Armor = Scratched Hide + Steam core
Groupable Tier 3 = Tier 2 + 1 crystallos essence(anyone 1 of earth/fire/air/water)
Groupable Tier 4 = Tier 2 + 1 Prismatic essence (All 4 Crystallos Essences)
Raid Tier 1 = Steel-Studded armor (Off minor SoF raids)
Raid Tier 2 = Ancient Husk armor (Off MMM flagging Raids)
Raid Tier 3 = Rootbound Auspex Husk = Steel Studded + Gyro core
--------------------------------------Ancient Husk + Gyro core
--------------------------------------Un-Cored Template + Gyro core
Raid Tier 4 = Prismatic Growthwalker