Heroes of Newerth Wiki
The antiquarian monks of the Merugian Order, long since vanished from Newerth, are known for the illuminated manuscripts hidden in their far-flung monasteries. Filled with the uncovered secrets of the Ancients, a Merugian Codex can help one gain a better understanding of the world, so much so that he grows in all abilities and even combat prowess. Moreover, the books contain devastating sorceries derived from Ancient technology.
Location Icon Combative.png Combative
Type Filter Intelligence.png Intelligence
Filter Damage.png Damage
Filter Activatable.png Activatable
Stats +6/7/8/9/10 Strength
+4/5/6/7/8 Agility
+16/18/20/22/24 Intelligence
Notes Can be upgraded 4 times
Cost 2540/3540/4540/5540/6540 (1000)
Components Item Builds into
Major Totem (540)
Neophyte's Book (1000)


When activated, deals a massive burst of damage to an enemy target.

After obtaining this item, the recipe may be re-purchased to upgrade it. Can be upgraded four times.


Target Unit Enemy Units
Type - Magic
Range: 600/675/750/825/900
Mana Cost: 120/135/150/165/180
Cooldown: 30/28/26/24/22 seconds
Deals 350/450/600/750/900 Magic Damage to target.
  • The colour order is white/green/blue/purple/red for levels 1/2/3/4/5 of the item.


Version 4.10.1

  • Magic Damage for level 1 Codex increased from 330 to 350.

Version 4.10.0

  • Magic Damage for level 1 Codex reduced from 350 to 330.

Version 4.9.3

  • New component buildup: Neophyte's Book.jpg Neophyte's Book (1000 Gold.png) + Major Totem.jpg Major Totem (540 Gold.png) + Recipe (1000 Gold.png) = 2540 Gold.png Total
  • No longer grants bonus Attack Damage.
  • Now grants 6/7/8/9/10 Strength, 4/5/6/7/8 Agility and 16/18/20/22/24 Intelligence.
  • Magic Damage dealt by the active part of the item changed from 400/500/600/700/800 to 350/450/600/750/900.
  • Cast Range changed from 600/700/800/900/1000 to 600/675/750/825/900.
  • Cooldown changed from 40/36/32/28/24 seconds to 30/28/26/24/22 seconds.
  • Mana Cost changed from 180/160/140/120/100 to 120/135/150/165/180.
  • Visual effects for the lightning now change with level!
    • The colour order is white/green/blue/purple/red for levels 1/2/3/4/5 of the item.
    • Credits to Whyzozerious for the visual effect improvements!

Version 3.8.0

  • 3 Strength removed.
  • 3 Agility removed.
  • Damage increased from 18 to 18/20/22/24/26 as you upgrade.

Version 1.0.7

Version 0.1.45

  • Mana Cost decreased to 180/160/140/120/100.

Version 0.1.23

  • Moved category to Combative.

Basic Items Icon Supplies.png Supplies Icon Accessories.png Accessories Icon Weapons.png Weapons Icon Relics.png Relics Icon Legendary.png Legendary
Recipe Items Icon Initiation.png Initiation Icon Supportive.png Supportive Icon Protective.png Protective Icon Combative.png Combative Icon Morph Attack.png Morph Attack
Other Items Boss Drops Removed Items Obsolete Items Debug Item