It was important that he use the bonding ritual spell to create a connection between him and the plant because he didn't raise the plant himself and isn't familiar with it.
The two of them are strangers, so they need a good basis for a pleasant cooperative relationship. This was why he didn't waste time about it before doing it.
He also used his Beast Link spell on the green-faced plant so that the two of them would be able to communicate and locate each other easily.
With this done, he took the green face plant outside the sect to feed it. His main goal is to rob and kill for money. But he took the green face plant with him so that he could feed it the corpses of the people that he kills.
This is something that he wouldn't have been able to do with the blood vine. He would have had to plant the blood vine in his floating island, and it would have needed to stay there forever and ever.
The green face plant coiled around his torso like a giant green snake. Its large head hung on his soldiers while its four main roots hung like tails behind him. As he streaked through the sky, it used its divine sense to scan everywhere they passed by with curiosity.
He had expected the green face plant to be bloodthirsty. But after spending some time with it, he realized that he had underestimated the inclination for violence of the green face plant.
Other plants are violent because they need to be violent if they are to survive. The green face plant is also violent because it wants to survive. But even when it isn't hungry, it still longs to eat everything that it sees moving. As long as something was edible, it always wanted to eat it.
The green face plant was always urging him to allow it to kill everyone they passed by. He couldn't allow it to have its way, especially since they were still in the sect.
He first went to get some junior foundation establishment cultivators to help him. Then he went to the outer sect to get some more helpers for his fishing game.
After he left the sect with his fishing team, the green-faced plant began to urge him again. Every time it saw someone, it would ask him, "Can eat?"
Arthur would reply, "No!"
Then a few seconds later, or even a single second later, it would see someone else and ask, "Can eat this?"
Arthur would frown and say, "No."
This would repeat again and again. He asked the green face plant to shut up, but it had no intention of shutting up when it saw food.
According to it, "How know to eat if no ask?"
The mind of the green face plant wasn't well developed. Calling it simple-minded would be an exaggeration. What it had was a single-track mind focused on killing.
So it understood him when he asked it to shut up. But it would quickly forget that request and try to kill the next living thing it sees as soon as it sees it.
The only time he could get the green face plant to shut up was when he fed it plant essence. But no matter how much he feeds it, it will still want to eat once it is done eating whatever it is feeding on. As for the extra life force from excess feeding, it would convert then to life force fruits.
The sight of the life force fruits brought a smile to his face. No matter how annoying the green face plant was, he was willing to get used to it as long as it continued to produce life force.
While smiling about the crystal fruits, he said to the green-faced plant, "I think you should be called Green Glutton. Or the Green Pit, since you're essentially a pit where anything that falls into never comes out from."
The green-faced plant asked him in confusion, "What is Green?"
He thought about the question for a short while before saying, "The green color is the color of plants. It is the spectrum of light that plants don't absorb."
His answer was enlightening to the green-faced plant. It said, "Not like green. I want everything."
This made Arthur chuckle and say, "Fine then, you will be Endless Gluttony or the Endless Pit. I like the ring of Endless Pit. It has a nice ring to it, and it also gives you a goal to aim for in the future. With this name, you must seek to become an all-consuming pit."
The plant didn't care about what name it got. The only things it cared about were what it would eat next and what it would eat next. And it made this clear to Arthur.
It said, "What food now?"
Arthur fed it more life essence. As he did so, he continued to brainstorm about what name to give his new pet.
He said, "At the rate you eat, if you didn't have anything to eat, you would even eat yourself. Isn't that what your crystal fruits are for? You're the only plant I know that eats itself. Or can your fruits be called your offspring?"
As he spoke, he realized something. So he said, "That is it. You shall be Ouroborus."
Ouroborus didn't speak this time around because it was busy eating life essence. Its mental power appeared incapable of processing what he was saying and replying while it was eating. Most of its attention and mental power had gone into eating and enjoying its meal.
Arthur could only sigh when he saw Ouroborus so focused on eating. Then he said, "At least he is very good at doing what I got him for. He definitely didn't lie on his resume."
Ouroborus can give him more life force for his life essence than the trees in the forest in the inner sect can because it has a higher conversion rate than they and because it has a smaller size and energy needs than they.