The battlefield (2), The traps.
While Dalvine was enjoying his little (health walk), at the same time, Alvine had just finished operating the [gaia pearls] that he had judiciously placed all along the wall. Even if he knew that divine beasts will not have trouble avoiding traps or will be ineffective against them, it was not the same for emperor beasts!
As its elementary pearls could be as powerful as elementary laws, the beast emperors were either die instantly or seriously wounded. But what surprised him was the effectiveness of his traps on the beast emperors. Not only were they trap based solely on basic skills such as peaks of the land that come out of the walls during their escalations, spears of the land that are intended for flying beasts trying to fly to cross the wall.