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By GamGem ResearchLast updated 20 Aug 2026 · 00:00

Epic · Summoner's Rift

Fiendish Codex

850gold

Increases Ability Power and Cooldown Reduction

What it grants

  • 25 Ability Power
  • 10 Ability Haste

Passives

Stats only — this item has no passive. See the shop for items that do.

Build path

Builds from

Combine cost

200

on top of 2 components, for 850 in total.

Builds into

How it performed

Pick rate
14.3%
Win rate
47.8%
Completion
60.3%
Purchase slot
1
Games
56,993
Δ this patch
-0.3

Summoner's Rift · patch 26.16 · Emerald+ · NA

Who buys it

  • Top15.7%
  • Jungle28.3%
  • Mid15.0%
  • Bot19.0%
  • Support21.9%

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.

25 Ability Power · 20g each, from Amplifying Tome
500g
10 Ability Haste · 50g each, from Glowing Mote
500g

Other items for the same job

All tagged “Spell Damage” by Riot.