War Domain is the ultimate rune array Kerparos controls.
It lets a familiar tamer project their familiar space into the real world, changing the rules of reality and creating a battlefield that favors the tamer.
For example, the dark abyss in Logan's familiar space can be projected into the real world, making a perfect fighting zone for dark-type familiars.
In a large-scale war, this power is incredibly strong.
Because of that, Logan needs to open special zones inside his familiar space to place these domains. This is the real reason he was so eager to absorb the Blood Cultivation Realm's space energy and condense space crystals.
Kerparos took the space crystals and got to work right away. He set up the first War Domain in the underground part of the familiar space: the Deep-Earth Maze.
There, Logan's ant army won't be affected by S-level monsters, and they can use the terrain to split up the huge beast tide.
