Idea Engine

The Idea Engine (イデア機関) is a device that originally belonged to Λ-No.11- before being transferred to Ragna the Bloodedge. Little is known about it at this point except that it is able to bypass the Azure Grimoire's negation. According to Kokonoe, the Idea Engine is a more powerful version of an Artificial Causality Phenomenon Weapon installed in Iron Tager.

Ex Machina: Minerva is also known to be equipped with an Idea Engine.

Usually, the Idea Engine causes some sort of customary negative effects on the user, but for some reason they were not present on Λ-No.11-.