Julian knows he cannot stop this thing, if he asks his pokemon to attack it, they can break or shatter the rock inside the Hydreigon which may cause a devastating explosion that would bring the whole island underwater.
He could only helplessly watch.
Julian "Infernape, Gengar, keep an eye on that thing, don't let it escape from here"
He said and looked down at the High Priest that he put down, he heard the High Priest talking about something, too bad he got impulsive and knocked him out, now Julian has to wait till this old man comes back to his senses.
He looked back at the Hydreigon and noticed that it's bone structures was actually changing, it was getting bigger with every crack of bone he could hear, its spine is getting thicker as the energy from the rock inside it is supplying it.
Julian then suddenly noticed something, the energy was pure chaos, a destructive form of Omniforce, even though Julian knew about it he couldn't do anything, he is not strong enough to control chaos yet, it will take him years and years before he reaches to the point where he can convert his power in chaos.
But now right in front of him, a rock is emitting such power that is converting a corpse to a monster, he just stood and watched as a small head started to grow right next to its dominant head, this small head became bigger and bigger till it became the same size as the original one, then the neck started to grow as well.
Now Hydreigon has four heads, two dominant and two mindless heads just like before, the Hydreigon came to life once again, its eyes are glowing purple, it roared caused the surrounding to vibrate, seeing a dead pokemon come back to life really surprised Julian.
Julian "Infernape, Gengar, aim for its heads, don't hit the body, if the rock inside it breaks, it will be troublesome"
With Julian's word, Infernape and Gengar charged at Hydreigon and attacked it, they didn't attack its body where the rock is at, Gengar used Shadow Claw with both arms and smashed Hydreigon's heads, Infernape grabbed Hydreigon's tail and bring it back to the ground.
Hydreigon roared and sent out purple hyper beams everywhere in fury.
Julian "Shit its shoot four Hyper Beams at the same time, this is troublesome. Gengar, Dimension Prison"
Gengar created dark portals from which black chains rushed out and tied up Hydreigon's legs and heads, it tried to struggle out of them but the physical force is not enough, seeing it was on no effect Hydreigon started to use Hyper Beam one after the other, the Hyper Beam was full of chaos energy and whatever it hit got destroyed, one of the Hyper Beams from Hydreigon's mindless head hit Gengar's chair freeing its another head.
It then started to shoot out the chains and destroyed them, even though Gengar is strong and his move can hold anything, chaos energy is not one of them, it can destroy everything, even Gengar's chains.
Once Hydreigon was free he started to wreak havoc, Gengar continued to bring down chains on top of Hydreigon but Hydreigon just shot them down, with its four heads shooting purple Hyper Beams filled with Chaos energy.
Infernape used his speed to dodge the Hyper Beams and charged at Hydreigon, he used Focus Punch and punched one of Hydreigon's main head and sent it flying as it crashed onto the statue of Giratina.
The statue suddenly collapsed and fell down on Hydreigon filling the whole temple in dust but the Hydreigon was not down.
Purple hyper beam shot out of the rubbles and Hydreigon shot out of it, it roared once again sending waves of chaos energy which caused both Gengar and Infernape flying and crashing on the wall.
Its body started to twitch again and its spine started to shift again, another pair of wings grew out of its back making it have eight wings now.
It roared and charged at the ceiling, it launched four Hyper Beams at it creating a huge hole to escape.
Julian "Infernape, Gengar, after it"
Infernape and Gengar got back to their feet and charged at the escaping Hydreigon but it is too fast while flying, with its extra wings it became faster, it shot out of the hole escaping from Gengar and Infernape, even though both of them are fast, they cannot fly as fast as Hydreigon.
Julian "Shit, now an outrageous, aggressive, mutated Hydreigon is on the loose"
He said and sighed, he didn't expect that Hydreigon would be able to outspeed both Gengar and Infernape, it was indeed very fast.
Julian 'It looks like it can keep growing, if it gets more powerful it will be very troublesome'
He thought.
He picked up the High Priest and got out of the temple, after walking through the dark cave he saw Snorlax sleeping peacefully while all the members of the cult were knocked out completely, some of them are planted into a wall and some have fractured arms and legs.
Julian "Looks like Snorlax did a number on them"
He said and put Snorlax and Infernape back into their Pokeball while Gengar went into his shadow.
Julian 'I have to inform someone about this Hydreigon'
He thought and called Cynthia.
Cynthia "Hello, Julian?"
Julian "Yes, looks like we have a problem"
Cynthia "What is it?".