Bai Momo had paid a steep price to obtain Garchomp's Mega Stone a long time ago, but even now, the Mega Evolution they performed had never lasted particularly well.
By a conservative estimate, Mega Blazing Garchomp could fight in this form for another three minutes at most.
That was already the limit-not just Garchomp's, but Bai Momo's as well.
People generally divided the conditions a Pokémon needed to meet for Mega Evolution into three essentials: a Key Stone, a Mega Stone, and a bond.
Beyond those, however, Mega Evolution also tested the trainer's own condition and stamina.
The essence of Mega Evolution was to use the power of a bond to awaken abilities hidden within a Pokémon's body, briefly achieving a fundamental Mega Evolution. This was a burden on the Pokémon, and even more so on the trainer.
For Pokémon capable of Mega Evolution, the higher their base stats before Mega Evolution, the higher their base stats afterward.
Likewise, the pressure their trainers had to bear was greater.
The magnitude of the power gained was directly proportional to what you put in.
Take Long Weixi, the new generation's Dragon-type Elite Four member. She had mastered many kinds of Mega Evolution and could keep fighting for a long time.
But if you wanted her to perform Mega Evolution with a pseudo-legendary Pokémon, sorry-forty minutes was the limit.
This was a very real issue. When a Pokémon with a base stat total of 600 suddenly gained another 100 points, was that kind of power so easy to withstand?
By comparison, although non-pseudo-legendary Pokémon could not reach the same base stat heights as Mega-Evolved pseudo-legendary Pokémon after Mega Evolution, they could keep fighting for a long time. Both trainer and Pokémon could endure it longer.
Applied to the present situation, that meant Garchomp