In an instant.
A magnificent crystalline eye formed and became a Terastal Crown above Diancie's head.
It was as though she had opened a third eye.
Diancie's already formidable Mental Power surged at once, while the Gravity field imposed on Pikachu nearly crushed it completely.
At that moment, Pikachu felt as though it were carrying a mountain on its back.
"It's Psychic Terastal!"
Geeta cried out softly, gripping the armrests of her seat.
Not Rock, nor Fairy—did Su Hao even know about the cuisine that could alter a Pokémon's Terastal Type, something only the Treasure Eatery could make!?
On the Battle Arena, Su Hao watched Diancie's regal figure, now the center of everyone's attention, with a thoughtful expression.
"So it's roughly as predicted..."
At least in the games, different battle systems could not be stacked. Each Pokémon could only choose one out of four.
That was somewhat related to the changing generations, but when translated into this real world, the most important reason manifested in another form.
A Pokémon's physical qualities, and the compatibility between different battle systems.
Just as Mega Evolution and Gigantamax were completely incompatible.
One drew its power from the extraterrestrial Nihilego, while the other came from the power of Xerneas and Yveltal combined with mysterious giant stones.
On the other hand, Terastallization and Z-Moves worked exceptionally well together.
The essence of Z was light, while the essence of Terastallization was crystal.
Light and crystal did not conflict with one another; together, one plus one could even exceed two.
Diancie's Ultimate Burst essentially relied on the power of the Diancie Z Crystal to unleash the Radiant Power within her, stir a fragment of Xerneas's hidden source power, and make a single leap in Life Level. In truth, it had little to do with Mega Evolution.
Diancie was