Fiendish Codex
LoL item, Epic, patch 26.20. Fiendish Codex costs 850 gold and gives 25 Ability power and 10 Ability haste. Here is what it does, what it is built from, how gold efficient it is and which champions build it most in Master+ games.
Stats, prices, the recipe and the passive and active text come from Riot's Data Dragon for the current patch. The champions table counts the final items of ranked Solo/Duo games of Master+ players on the same patch.
Updated October 2026 · By LOLValue Team
Fiendish Codex Stats and Cost
Fiendish Codex costs 850 gold on patch 26.20 and gives 25 Ability power and 10 Ability haste. Bought with its components, the last step costs 200 gold, and selling it gives back 595. Its stats are worth 1,000 gold at the prices of the basic items, which makes it 118% gold efficient before its passive.
| Stat | Value |
|---|---|
| Ability power | 25 |
| Ability haste | 10 |
| Total cost (gold) | 850 |
| Combine cost (gold) | 200 |
| Sell value (gold) | 595 |
| Stat value (gold) | 1,000 |
| Gold efficiency | 118% |
| Tier | Epic |
| Maps | Summoner's Rift and ARAM |
What Fiendish Codex Does
Fiendish Codex has no passive or active: it gives only its stats.
The text is Riot's item description for the current patch. Numbers that change with level or with your stats show in game when you hover the item.
Fiendish Codex Build Path
Fiendish Codex is built from Amplifying Tome and Glowing Mote and builds into Nashor's Tooth, Archangel's Staff, Redemption, Cryptbloom, Bloodletter's Curse, Staff of Flowing Water, Horizon Focus, Cosmic Drive, and Riftmaker. Component prices are in brackets.
Built from
Amplifying Tome (400)
Glowing Mote (250)
Builds into
Nashor's Tooth (2,900)
Archangel's Staff (2,900)
Redemption (2,300)
Cryptbloom (3,000)
Bloodletter's Curse (2,900)
Staff of Flowing Water (2,250)
Horizon Focus (2,700)
Cosmic Drive (3,000)
Riftmaker (3,100)
Champions That Build Fiendish Codex Most
47 of the 3,090 Master+ players sampled on patch 26.20 ended the game with Fiendish Codex, and they won 48.9% of those games.
| Champion | Games with it | Share of the champion's games | Win rate |
|---|---|---|---|
| Lulu | 5 | 12% | 80.0% |
| Karma | 4 | 14% | 0.0% |
| Galio | 3 | 11% | 66.7% |
| Sylas | 3 | 5% | 66.7% |
| Milio | 3 | 14% | 33.3% |
We read the ranked Solo/Duo match history of Master, Grandmaster and Challenger players through the Riot Games API and count the items each of the ten players ended the game with. Share is the part of a champion's games that ended with Fiendish Codex; follow a champion to see its whole build.
Is Fiendish Codex Gold Efficient?
Gold efficiency compares what an item's stats would cost if you bought them in basic items (Long Sword for attack damage, Amplifying Tome for ability power and so on) with the item's price. Fiendish Codex's stats are worth 1,000 gold for a price of 850: 118%. Above 100% the stats alone are worth more than the item costs; the passive and active come on top and are not priced. The LoL items list ranks every item this way.
Frequently Asked Questions
How much does Fiendish Codex cost in LoL?
850 gold on patch 26.20. The last step after its components costs 200 gold, and it sells for 595.
What stats does Fiendish Codex give?
25 Ability power and 10 Ability haste.
Is Fiendish Codex gold efficient?
Its stats are worth 1,000 gold for a price of 850, which is 118% gold efficient before its passive and active.
What is Fiendish Codex built from?
Fiendish Codex is built from Amplifying Tome and Glowing Mote, and builds into Nashor's Tooth, Archangel's Staff, Redemption, Cryptbloom, Bloodletter's Curse, Staff of Flowing Water, Horizon Focus, Cosmic Drive, and Riftmaker.
Which champions build Fiendish Codex most?
In Master+ ranked games on patch 26.20, Lulu, Karma, and Galio build Fiendish Codex most.
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LOLValue isn't endorsed by Riot Games and doesn't reflect the views or opinions of Riot Games or anyone officially involved in producing or managing Riot Games properties. Riot Games and all associated properties are trademarks or registered trademarks of Riot Games, Inc. Item data comes from Riot's Data Dragon for the current patch; who builds each item comes from a sample of ranked Solo/Duo games read through the Riot Games API.