Taking Control Of The Great Desolate Plains
After they decided on what to do, a task force made up of avatars was sent to the east while Davis had Captain Praezen and Captain Lightsky tame the jade-green sandworm and crimson scorpion, respectively.
He had them train in the Three Revolutions Vertex Beast Taming Art.
This beast-taming art allowed them to control a maximum of three beasts. Accurately, they could control three beasts above one minor stage, two beasts above two minor stages, and one beast above three minor stages.
Thus, it allowed them to control one Peak-Level Immortal Emperor Beast with a prowess that's two levels higher quite freely without having their soul force tied up a lot.
Indeed, the Three Revolutions Vertex Beast Taming Art didn't take up much soul force, only taking ten percent in total, regardless of the number of beasts occupying the nodes in the soul sea.
That's why only a few beasts or one beast of abnormal power could taken.