|“||Accumulates experience as you do. When fully charged it produces 10 Chaos Chests.||”|
— Item Tooltip
Chaos Codex is a Legendary Tome that can be only bought from the Store for 2500 credits. They produce 10 Chaos Chests, when they are fully charged. Unlike Common Tomes (that can be used as often as you like without cooldowns), these tomes can only be used once a week, although, they provide more rewards than Common Tomes per individual use.