"Do you think this will work...?" Bianca asked worried

And with a determinated expression on his face Touya said: "...I have no idea."

Then he pressed the button to activate the Megaring and the Mega Stone. And so it began...
In front of their eyes they saw how Hydreigon was being covered in some type of energy coccoon... the ground was trembling...there were small rocks floating around him, and the air was charged with energy.

The coccon grew bigger and bigger until in a glimpse it exploded with rage and releasing incredible amounts of power into the environment. The beast inside roared with anger and hate but at the same time with a glorius and strong cry.

The mega-evolution was achieved succesfully...

Touya watched astounded and in shock what Hydreigon had become...Mega Hydreigon...just saying those words Touya felt excited and impacient to test his buddy's new powers.

Mega Hydreigon was surely a magnificent sight as it was still sparkling with some lights, product of the mega evolution process, as he had seen before with other megas. It was bigger than before, about 6' 4/5'', according to the pokedex it was now a Dragon/Steel type and not Dark type anymore which really surprised Touya, it was no longer levitating in the air but standing on two strong blue fur covered legs, with protective metalic armour all over it's body. Now it had two cannons on it's back, one at each side, and the two magenta black striped fur it had on it's belly was now metalic, sharp and spinning at high speed, as if they were chainsaws.

After admiring the presence of Mega Hydreigon, Bianca turned it's sight to Touya who was staring at the ground with his eyes shut, about to cry.

"Touya, are you OK?" Asked Bianca worried about what could happen to him.

Suddenly and with all his energy Touya screamed to the top of his lunges:

"Alright Hydreigon, it's time to show them...HOW...IT'S...DONE!

And as Touya said those last words Mega Hydreigon released a giant and powerful scream to go along with it's trainer.

Finally, the scenario was set for the last and the most epic of all the battles.

And so the battle begins...!