Amplifying Book is a basic object in
League of Legends.
Cost analysis
Gold efficiency *
Amplifying Book is the item from which the ability power gold value is derived, and as such derives a value of 21.75 
for each skill power point.
Becomes
Demonic Embrace
Hextech Alternator
Staff of the Archangel
Emerald Barrier
Aether Breeze
Lost Chapter
Rylai's Crystal Scepter
Devilish Codex
Nashor tooth
Mirror by Vitrobandle
Seeker's Armguard
Cosmic Boost
Cursed Jewel
Absorbing Look
Orb of Oblivion
Similar objects
Long sword
Unnecessarily Large Rod
Explosive Wand
Version history
V8.10- Removed from recipe
Runic Echoes.
- Removed from recipe
Staff of the Archangel and 
Eco de Luden.
- Added to the recipe of
Guinsoo's Fury Sword.
- Added to the recipe of Staff of the Archangel, Echo of Luden and
Orb of Oblivion. - Removed from recipe
Rabadon's Death Hat and 
Morellonomicon.
- Removed from recipe
Zeke's convergence.
- Removed from recipe for Nether Scepter Nether Scepter.
- Removed from recipe
Athene's Unholy Grail - Added to recipe for Nether Scepter Nether Scepter and
Lost Chapter.
- Removed from recipe
Brightness.
- Added to recipes for Grimoire of the Nether Path Grimoire of the Nether Path, Arcane Plague Arcane Plague, Rite of Ruin Rite of Ruin, and Flowing Wand of Water Flowing Wand in Black Market Brawlers.
- Removed from recipes
Liandry's Torment and 
Wooglet hat. - Added to recipes Athene's Unholy Grail, Morellonomicon and Rabadon's Death Hat.
- Removed from recipe Morellonomicon.
- Added to the recipe of
Aether Breeze.
- Added to the recipe of
Twin Shadows.
- Removed from Hextech Explorer recipe Hextech Explorer.
- Added to the recipe of Wooglet hat.
- Removed from recipe
Disease (item removed).
- Removed from recipe Athene's Unholy Grail.
- Added to recipes Liandry's Torment and
Claw of the Fiery Death.
- Added to the recipe of Athene's Unholy Grail.
- Added to the recipe of Disease.
- Added to recipes
Mejai's Soul Stealer and 
Haunted Mask.
- Item cost reduced to 435 of 460 .
- Removed from recipe
Curse of the Liche. - Item cost increased to 460 of 420 .
References
Object list
Initial Objects
Object list
Initial Objects
