An Ark Mechanicus commanded by Arch Magos Cassius discover a world rich in resources and potential. The only issue is the inhabitants.

Cover art is from the game Warhammer 40,000 Mechanicus.

Warhammer 40,000 is property of Games Workshop

MLP is property of Hasbro

EDIT: Inspiration
The original idea for this is actually from an unfinished comic on deviantart by someone called Telgin I found a few years ago. Basically I just kept thinking about what happened next and this is the result. If you read the comic then the first chapter you can probably see the similarities.

Also many characters have their parallels in the game Mechanicus as well.

Hope is the first step on the road to disappointment. The universe is full of hope, as it is with despair.

Far too often will the desperate fools of the universe lay their hands upon the key to their salvation...only to have it snatched away.

So when Ahzek Ahriman of the Thousand Sons encounters such salvation, he does respond with hope, but with determination. He will restore his lost brothers, he will right his ancient wrongs, and he cut down anyone who dares to stand in his way.