A servitor specifically for searching after functional "reverse intent" spells, according to the method described in the anime "The Strongest Magician in the Demon Lord's Army Was a Human", 魔王軍最強の魔術師は人間だった.

It is a search bot which finds spell formulas by comparing your request for result with previously known results, then finds the intent needed to achieve this, adapted to your local circumstance, then casts it as a spell if you so wish.