"If a Mage who passes the war trial is an elite, then the exploration-type Mage is the elite of the elite." Priscilla the Transdimensional was not in the least surprised that Adam had asked this; she explained slowly.
"Whether it's command, combat, or infiltration, Mages on those three kinds of missions only start work after a Mage tower has torn open the crystal wall system and successfully invaded an other plane. Exploration-type Mages are different. First they must verify the accuracy of the coordinates, then smuggle themselves into the other plane through special magic, and collect important intelligence: the types and distribution of that plane's resources, the energy levels of its living beings, the locations suitable for building the plane sacrifice magic formation, and so on."