He dispatched over a hundred avatars and painstakingly began inscribing the array formations. The materials worth over a hundred billion universe crystals were precisely the materials used to lay out those formations!
When cultivators unleashed certain powerful ultimate moves, they had to expend immense mental effort. But if an array formation was arranged according to the profound mysteries of that ultimate move, then it could be activated with only the tiniest sliver of mental effort! For example, one of the three great killing moves of Dongbo Xueying's Flying Snow Battle Method, 'Multiversal Void Great Annihilation,' required his nine avatars to expend more than half their mental effort before it could be successfully unleashed.
But once the array formations had been successfully arranged—one formation, two formations... ten formations! A hundred formations!
So long as they coordinated well, with a single thought...