By GamGem ResearchLast updated 18 Oct 2026
Epic · Summoner's Rift
Fiendish Codex — the AP and Ability Haste Component
850gold
Increases Ability Power and Cooldown Reduction
Fiendish Codex is the AP-plus-haste component: 25 Ability Power and 10 Ability Haste for 850 gold, worth 117.6% of the price in stats. Nine items finish from it, among them Nashor's Tooth, Archangel's Staff, Cryptbloom, Cosmic Drive and Riftmaker. Supports bought it most (34.7%), ahead of mid laners at 27.9%.
What it grants
- 25 Ability Power
- 10 Ability Haste
Passives
Stats only — this item has no passive. See the shop for items that do.
Fiendish Codex at a glance
Fiendish Codex is an epic item on Summoner's Rift that costs 850 gold: Amplifying Tome and Glowing Mote plus 200 gold. It grants 25 Ability Power and 10 Ability Haste. It builds into 9 items: Nashor's Tooth, Archangel's Staff, Redemption, Cryptbloom, Bloodletter's Curse, Staff of Flowing Water, Horizon Focus, Cosmic Drive and Riftmaker. Priced by its stat block alone, it returns 117.6% of its cost in stats.
Build path
Builds from
Combine cost
200
on top of 2 components, for 850 in total.
How it performed
- Pick rate
- 1.8%
- Win rate
- 45.5%
- Completion
- Not counted
- Inventory slot
- 4
- Games
- 11,883
- Δ this patch
- Not counted
patch 26.18 · Ranked Solo/Duo · Master+ · EUW · KR · NA · 65,406 matches counted
Who buys it
- Top13.6%
- Jungle11.2%
- Mid27.9%
- Bot12.6%
- Support34.7%
Reach for it when
- Rotation uptime
Gold efficiency
117.6%1,000 gold of stats for 850
The stat block only — the passive is not priced.
3rd of 25 items Riot tags SpellDamage, by this measure. Nearest: Bandleglass Mirror 144.4%, Lost Chapter 133.3%, Malignance 116.7%, Blackfire Torch 114.3%.
- 25 Ability Power · 20g each, from Amplifying Tome
- 500g
- 10 Ability Haste · 50g each, from Glowing Mote
- 500g
What Fiendish Codex builds into, in full
Archangel's Staff 2,900 gold
Recipe: Tear of the Goddess, Lost Chapter and Fiendish Codex plus 450 gold. Grants 70 Ability Power, 600 Mana and 25 Ability Haste. Passive: Awe, Manaflow.
Bloodletter's Curse 2,900 gold
Recipe: Haunting Guise and Fiendish Codex plus 750 gold. Grants 65 Ability Power, 400 Health and 15 Ability Haste. Passive: Vile Decay.
Cosmic Drive 3,000 gold
Recipe: Kindlegem, Aether Wisp and Fiendish Codex plus 450 gold. Grants 70 Ability Power, 350 Health, 25 Ability Haste and 4% Move Speed. Passive: Spelldance.
Cryptbloom 3,000 gold
Recipe: Blighting Jewel, Fiendish Codex and Fiendish Codex plus 200 gold. Grants 75 Ability Power, 30% Magic Penetration and 20 Ability Haste. Passive: Life from Death.
Horizon Focus 2,700 gold
Recipe: Fiendish Codex, Fiendish Codex and Amplifying Tome plus 600 gold. Grants 75 Ability Power and 25 Ability Haste. Passive: Hypershot, Focus, Hypershot.
Nashor's Tooth 2,900 gold
Recipe: Recurve Bow, Blasting Wand and Fiendish Codex plus 500 gold. Grants 80 Ability Power, 50% Attack Speed and 15 Ability Haste. Passive: Icathian Bite.
Redemption 2,300 gold
Recipe: Fiendish Codex and Forbidden Idol plus 850 gold. Grants 30 Ability Power, 15 Ability Haste, 100% Base Mana Regen and 10% Heal and Shield Power.
Riftmaker 3,100 gold
Recipe: Haunting Guise and Fiendish Codex plus 950 gold. Grants 70 Ability Power, 350 Health and 15 Ability Haste. Passive: Void Corruption, Void Infusion.
Staff of Flowing Water 2,250 gold
Recipe: Fiendish Codex and Forbidden Idol plus 800 gold. Grants 35 Ability Power, 10% Heal and Shield Power, 125% Base Mana Regen and 10 Ability Haste. Passive: Rapids.
Fiendish Codex balance history
Riot's notes from patch 25.S1.1 to 26.20 change nothing about Fiendish Codex.
Other items for the same job
Quick answers about Fiendish Codex
- How much does Fiendish Codex cost?
- 850 gold in total — Amplifying Tome and Glowing Mote plus 200 gold.
- What is Fiendish Codex built from?
- Amplifying Tome (400) and Glowing Mote (250), plus 200 gold to combine.
- What does Fiendish Codex build 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) and Riftmaker (3,100).
- What stats does Fiendish Codex give?
- 25 Ability Power and 10 Ability Haste.
- Where can you buy Fiendish Codex?
- In Summoner's Rift and Howling Abyss (ARAM) — the maps Riot's own data marks it as sold on.
- What does Fiendish Codex sell for?
- 595 gold, against 850 to buy.
- Is Fiendish Codex gold efficient?
- Its stats are worth 1,000 gold at basic-item prices against a cost of 850 — 117.6%. The passive is not priced, so this measures the stat block only.