Some Serpent Vines could even fight against dao formation experts without losing a step. Of course, these weren't the level of vines that were in their corner, or else there would be no hope of dealing with them.
However, there were many on the essence level, with a handful at the saint level. If their battle power was coordinated, they could be very useful. The problem was that Dyon didn't have a method for controlling them so he could only turn to Eli.
According to Eli, he wasn't entirely sure of a way either. Apparently, no one had a foolproof method of controlling Serpent Vines, but he was confident that once Delia returned, he'd be able to start studying them properly. He even got Dyon to buy him a few Serpent Vines embryos to begin early.
After dealing with all of that, Dyon left. He didn't need to see Ri through her breakthrough, he had the utmost confidence in her. But, for now, he had to deal with Soul Rending Peak.