Harry Potter and the Legacy of Horus

Disclaimer: I don't own Warhammer 40.000 or Harry Potter. They are just figments of the imagination of their creators given flesh in books and other stuff and distributed throughout the world. This idea is made with some help from Dark Retribution and I hope he will appreciate it because I wrote this entirely based on his all-knowing knowledge. Praise to the great Dark Retribution!

Tzeench

Harry Potter wasn't feeling good at the moment. When he got back to Privet Drive number 4 he was immediately put to work by the fat git called uncle Vernon. Harry growled under his breath and tears prickled beneath his eyelids.

He still thought about Sirius and how he had been ripped from him. Bellatrix Lestrange was to blame and she would suffer a fate beyond anything known to humanity. Harry felt the anger and rage beneath the skin and he felt it clawing at the small sense of boldness and righteousness. He felt it crumble and was washed in the anger. He attacked the lawn he was about to mow with a vengeance and soon it was done perfectly. Then Petunia came out and started shrieking that the grass was too low and what a horrible boy he was. Harry couldn't take it anymore and he felt his anger flow through his eyes and he watched as Petunia kept on shrieking and suddenly a white hot surge shot through his eyes and a window broke directly behind Petunia shattering with a loud crash making the woman jump.

She looked at the ruined window and said:

"Potter this is the last time your abnormality will cause us grief. Now get in the cupboard and let Vernon deal with you when he gets home."

Harry nodded and the skinny woman barraged him with verbal insults all the way to the cupboard where she threw him in and then locked it. Harry stared at the darkness and felt incredibly tight within the confined space.

He knew that there was nothing to be done. Where the hell was the Order when you needed them?

That moment Mundungus Fletcher popped into Privet Drive to take a look at Harry. When he saw that everything was quiet he just sat down on his post and started leafing through the Daily Prophet like nothing was wrong. Strong anti muggle spells kept the muggles from noticing anything of it.

He departed after making sure nothing unusual happened and when Vernon Dursley drove into the parking lane and lumbered up to the house.

Vernon Dursley did not have a good day. First those fools came all the way up to his office complaining about the long shifts that they would have to do. Vernon had made them go back with a new schedule which shortened the hours a little. They had threatened to resign if their demands weren't met. Vernon just barely managed to keep his best men working there and thus complied with their wishes. Then he had almost been put into jail for driving too hard. He was pretty much pissed off right now and when Petunia told him that the freak had managed to shatter a window he just went up to the cupboard and dragged the thin and pale boy out and shouted:

"BOY WHAT DO YOU THINK YOU WERE DOING SCARING YOUR AUNT LIKE THAT! YOU WILL BE PUNISHED FOR THIS!"

Harry tried to speak but the spit and foam around his uncles mouth made him unable to speak as the man looked to be mad. Where was the Order to prevent this? Where was Dumbledore to help him? Why did Sirius had to die? Why? Why?

Harry was forcefully thrown against a cabinet and he heard it shatter and he felt a few bones in his body shatter at the impact. Vernon just got madder and he shouted:

"LOOK AT WHAT YOU HAVE DONE BOY! YOU BROKE OUR CABINET! NOW I GOT TO WHIP YOU UNTIL YOU LEARN YOUR LESSON. DAMN THOSE FREAKS FOR TELLING US WHAT TO DO. I AM STILL THE MASTER OF MY OWN HOUSE!"

Then a punch was delivered to Harry's ribcage and he exhaled sharply as the air was being pushed out of his body.

Then he was once again thrown in the cramped cupboard and he felt his wounds sting as blood leaked from it. He fell unconscious the moment his heart stopped racing and after he had lost a lot of blood.

His dreams were plagued with visions of Voldemort torturing innocent muggles and he immediately started to feel anger at the muggles who kept him there so that he couldn't help those muggles. Why would he care for the muggles that ignored his very existence and never saw the abuse he underwent while his fat cousin sat on his ass

Harry felt the anger within his soul increase until it flowed over and he just raged within his mind and sent a bolt of energy through the link. He watched as Lord Voldemort fell screaming to the floor.

Then he felt an overwhelming presence in his head and he suddenly found himself standing in a room which was full of decay and rotting corpses which suddenly changed to a flowery field and then back to a battle field littered with corpses. A man stood there dressed in a strange suit of armour which Harry had never seen before. The man grinned at him and said:

"Mortal you came along at a goods time. I have been looking for a body to inhabit while in this Dimension and due to your vast Psyker power you shall be the perfect body for me, Tzeench to inhabit. I, the Lord of Change shall posses your body and kill off all people within the neighbourhood."

Harry laughed and said:

"Like I care about that. I want this entire world to die for what they have done to me."

The Chaos God's influence was slowly corrupting Harry's mind and making him more inclined to do evil things. Harbouring a god within one's mind isn't a good thing as it would drive the person insane. But Harry Potter was no ordinary man and as the Chaos Gods essence seeped into Harry's body he felt that he had to resist and focused on his scar and it pulsed a bright red and then he felt the power rush within his body and then the Chaos God screamed within his mind:

"WHAT IS THIS? YOU TRY TO BEAT ME FOOLISH MORTAL? I AM TZEENCH, LORD OF CHANGE AND SHALL NOT BE DEFEATED! IF I GO DOWN THEN YOU SHALL TOO!"

A black aura appeared around Harry and the boards on the wall started to blacken as heat built up. When it reached a crescendo it immediately was sucked within Harry's body. With a gigantic effort the God tried to get himself away from the sucking vacuum that was Harry Potter but found himself unable to do so. Then the Chaos God Tzeench was no more. His essence was now absorbed into the new Chaos God's body. The only thing that remained of the Chaos God of Change was his knowledge which was slowly being assimilated by Harry's brain.

When Harry would awaken was unknown. What was known that when he awoke there would be much slaughter and manipulation going around. The Thousand Sons would come to this planet and raze it to the ground then rebuild it and make it Harry's capital world.

Chaos would rule…

A new story out. I would like to thank Dark Retribution for inspiring me to write this fic and for motivating me to finally write it as well as pre-read it.