Just when John was going to withdraw his consciousness, the Vine shook again, and at the top of the three elemental leaves, he saw a sphere formed of elemental energy.
From his memories, he also knew that he could bring any ordinary, bronze, or iron-tier plant corresponding leaf inside the sphere to mutate them into an entirely new species.
Although it looked simple there were also certain restrictions, like you can only mutate one plant at a time. Moreover, after the plant was mutated it would take time to recover the energy in the sphere. The required time was 1 month. So he had to think carefully and choose the type of plant that he needed to mutate.
This ability was very interesting and John also decided to experiment with it. But to be on the safe side he decided to recover the mana to peak state.
So he left the room and brought back the Iron tier plants. He easily absorbed them without any problem.