Emerald Life Grass is a Special Rank 3 Spirit Plant, and if Ethan could evolve it, it would become at least a Special Rank 4 Spirit Plant, which is much better than the original.
If the Ancient Heartwood Tree required a Billion Perfect Quality Emerald Life Grass for its recovery, then it would require at least 100 million or even 200 million if he replaced it with an evolved version.
Therefore, Ethan hurriedly used the [Mystic Green Evolver] effect to check the requirements to evolve the Emerald Life Grass.
[Heaven's Mystic Harvesting - Mystic Green Evolver]
Touching the tiny sprout of the Emerald Life Grass, Ethan simply thought of the effects, and soon, the information appeared in front of his eyes.
[Spirit Plant: Emerald Life Grass]
[Grade: Special Rank 3]
[Evolutionary Paths (3 available paths)]
[1) Evolutionary Path: Emerald Water Life Grass]
[Grade: Special Rank 4]
[Probability: 50%]
[Requirements:]
