History of Rune

Runes are consumables used with the Chalice of Opulence in The Menagerie. The Chalice has three rune slots; the runes are inserted and consumed to steer which loot comes from the chest at the end. Purple runes are available as soon as you get the Chalice, and the other colours unlock as it is upgraded. Red runes guarantee class arm and leg armor or power weapons, green runes guarantee class head armor, hand cannons and sidearms, and blue runes guarantee chest armor, fusion rifles and shotguns.