The Oath Mark Codex is a progression system that provides global attribute bonuses and hero-specific upgrades, mainly tied to ascending 4F heroes (Lightbearer, Mauler, Wilder, Graveborn).
Below is everything about how the system works.
What Is the Oath Mark Codex?
The Oath Mark Codex is an account-wide progression feature that:
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Grants global attribute boosts to all heroes
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Unlocks hero-specific Oath Marks
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Introduces Oath Mastery, which provides additional global bonuses
Progression is tied to:
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Ascending heroes
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Collecting Codex Fragments
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Activating Oath Marks with Radiant Ink
Codex Fragments & Codex Leveling
You receive Codex Fragments the first time a hero reaches certain ascension tiers.
Additional ways to obtain fragments:
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Diamond purchase:
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500 Codex Fragments for 500 Diamonds
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Can be purchased 5 times per cycle (2,500 fragments total)
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Purchase limit resets every 42 days
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Codex Fragments are used to level up the Oath Mark Codex
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Each Codex level:
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Grants global attribute boosts
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Unlocks new hero-specific Oath Marks
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All attribute boosts from the Codex apply to all heroes, regardless of faction.
Oath Marks
Oath Marks are hero-specific upgrades that provide additional attribute bonuses once activated.
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They must be activated using Radiant Ink after ascending the required hero.
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Oath Marks are tied to the four main factions: Lightbearer, Mauler, Wilder, Graveborn
Oath Mark Tiers
There are three tiers, each providing stronger bonuses:
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Ebonglow
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Starsign
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Flareglint
Radiant Ink
Radiant Ink can be obtained through:
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Hero-specific events
- Purchasing 20 Radiant Inks by spending 2000 diamonds (this can be done twice every 42 days)
Radiant Ink is required to activate Oath Marks and is a key bottleneck resource in the system.
Oath Mastery
Oath Mastery is a secondary progression system tied to the number of Oath Marks you have unlocked.
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Unlocking more Oath Marks increases Oath Mastery level
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Oath Mastery provides special global attributes
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These bonuses apply to all heroes
