The Bible on Demon Era, reportedly used by ancient high priests.
It resonates with Ancient Hero's Boots.

MATK +160.

Every 2 refine levels, MATK +10.
Every 3 refine levels, increases Duple Light damage by 25%.

Refine Level +9, reduces after attack delay by 10% (ASPD +10%).
Refine Level +11, increases Duple Light damage by additional 25%.

When equipped with Ancient Hero's Boots:
Has a chance to increase INT by 20 and MATK by 15% for 7 seconds when dealing magical damage.

[iRO Description]
A book on eradication of demons, which is said to have been used by high-ranking ancient clergymen.
It seems to resonate with Ancient Hero Boots.

MATK +160.
Every 2 Refine levels MATK+ 10.
Every 3 Refine levels Duple Light damage increased by 25%.
When Refine level is 9 attack speed increased (delay after attack decreased by 10% ).
When Refine level is 11 Duplex Light damage increased additionally by 30%.
When equipped together with Ancient Hero Boots and attacking with magic attacks, with a fixed rate for 7s INT + 20, MATK+ 15% .

Type: Book Attack: 165
Weapon Lv : 4
Required Lv : 100
Required Job: Arch Bishop Jobs