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Fiendish Codex League of Legends ItemPC

Fiendish Codex

League of Legends (PC) Fiendish Codex in Wild Rift

Fiendish Codex Current Status

Fiendish Codex has been changed in 18 League of Legends patches. 2 buffs, 3 nerfs, 12 adjustments. Most recently adjusted in Patch 26.11 ().

Cost: 850g
Ability Haste: 10
Ability Power: 25
Recipe:

Fiendish Codex Changes

Patch 26.11

change

General

  • No longer builds into Imperial Mandate.

Patch 26.1

change

General

  • Now builds into Redemption.

Patch 25.10

change

General

  • Now builds into Hextech Rocketbelt.

Patch 25.S1.1

change

General

  • Now builds into Bloodletter's Curse.

Patch 14.19

buff

General

  • Total cost reduced to 850 gold from 900 gold.
  • Combine cost reduced to 200 gold from 250 gold.
  • No longer builds into Malignance and Morellonomicon.

Patch 14.6

nerf

General

  • Ability power reduced to 25 from 35.

Patch 14.1

change

General

  • New Recipe: Amplifying Tome + Glowing Mote + 250 gold = 900 gold.
  • Old Recipe: Amplifying Tome + 465 gold = 900 gold.
  • No longer builds into Banshee's Veil, Liandry's Anguish, Lich Bane, Night Harvester, Zhonya's Hourglass.
  • Now builds into Archangel's Staff, Cryptbloom, Malignance, Morellonomicon, Riftmaker, Staff of Flowing Water.

Patch 13.10

change

General

  • Now builds into Imperial Mandate.

Patch 13.6

change

General

  • Now builds into Nashor's Tooth.

Patch 12.12

change

General

  • Now builds into Night Harvester.

Patch 12.2

change

General

  • Now builds into Lich Bane.

Patch 11.23

change

General

  • Now builds into Horizon Focus.

Patch 10.23

change

General

  • Updated icon.
  • Ability haste increased to 10 from 0.
  • Unique cooldown reduction reduced to 0% from 10%.
  • Now builds into Cosmic Drive and Liandry's Anguish.
  • No longer builds into Athene's Unholy Grail, Nashor's Tooth, Runic Echoes, and Twin Shadows.

Patch 8.9

buff

General

  • Ability power increased to 35 from 30.

Patch 8.4

nerf

General

  • Added to recipe for Twin Shadows.
  • Removed from recipe for Morellonomicon.

Patch 6.9

change

General

  • Combine cost increased to 465 gold from 365 gold.
  • Total cost increased to 900 gold from 800 gold.
  • Ability power increased to 30 from 25.

Patch 3.1

nerf

This change allows Fiendish Codex and its various build paths to be more versatile and universally attractive for ability power champions.

General

  • New Recipe: Amplifying Tome + 385 gold = 820 gold
  • Old Recipe: Faerie Charm + Amplifying Tome + 385 gold = 1000 gold
  • No longer grants any mana regen.

Patch 1.0.0.139

new

Fiendish Codex added to League of Legends

General

  • Combine cost reduced to 300 gold from 420 gold.
  • Total cost reduced to 1125 gold from 1245 gold.

Related League of Legends Items

Fiendish Codex League of Legends FAQ

Frequently Asked Questions
When was Fiendish Codex last changed in League of Legends?
Fiendish Codex was last adjusted in League of Legends Patch 26.11, released May 27, 2026.
How many times has Fiendish Codex been buffed or nerfed in LoL?
Fiendish Codex has been changed in 18 League of Legends patches: 2 buffs, 3 nerfs, 12 adjustments.
Was Fiendish Codex changed in LoL Patch 26.14?
No - Fiendish Codex was not changed in Patch 26.14. Its most recent change was in Patch 26.11.
When was Fiendish Codex added to League of Legends?
Fiendish Codex was added to League of Legends in Patch 1.0.0.139 on May 1, 2012.