Metamorph

Emery opened the book he had just taken out from his spatial space a moment ago. It was the book that was given to him by the Arbor Master and began reading it.

[Metamorph Theory]

The first half of the book was filled with writing about lifeforms, including their definition, the purpose of life and how life should be treated. Emery quickly assumed it was the Arbor Master philosophy and thoughts, so he considered reading it before starting his experiment.

The other half of the book was about his research on how to enrich plant life in order to enhance it and help them to metamorph. 

The book was filled with instructions, which were a combination of four main factors. A plant with extreme vitality, the Photosynthesis spell and a particular metamorph potion were all part of the instructions. 

Currently, Emery already had the plant and the spells necessary to complete the stage. That meant he just needed the third item to accomplish it.