Be Draenei
Settle on primitive world full of shamans worshiping rocks and fire.
Be so full of yourself that you rename their planet after your race.
You also have a prophet as a leader who knows for a fact that he is being pursued by space Lucifer and its only a matter of time before space Lucifer catches up
The orcs and ogres of this world have no greater concept of evil
And you do absolutely nothing to warn them of the great evil that is coming
AND IN A MOVE THAT SURPRISED NO ONE SPACE LUCIFER WAS ABLE TO CORRUPT PRIMITIVES
And because your race remained secluded and hid away from the world instead of trying to coexist with the natural inhabitants, you get purged.
Oh and the Naaru that you brought to this world is now evil getting up to no good
Proceed to leave Draenor a fel shattered rock and try to play the victim about it