Thunder Book (サンダーブック?) are magical books that appears in the Fourth Singularity in Fate/Grand Order.
History
Role
Fate/Grand Order
Characteristics
In Fate/Grand Order, it appear as enemies, introduced in the Fourth Singularity and later in the Fate/Accel Zero Order event.
Thunder Book's Saint Graph Designation is Caster in Fate/Grand Order.
Abilities
Skills
- Yellow Page (黄の頁, Ki no Pēge?)
Noble Phantasm
The Thunder Book's Noble Phantasm is R Effect (Ｒエフェクト?).