Disclaimer: I do not own Yu-gi-oh or Harry Potter. People who make a lot more money then me do.
Yugi tossed in his sleep, peace would not bless his slumber and grant him rest. In his dreams voices rang in fear and despair draining all color except for the reds of blood. His throat caught as he watched the destruction of people he did not know, but his heart and stomach twisted at the sight of such atrocities. Acrid air scorched his nose with the smell of ash and rot. The scene bleached to blessed, empty white. The air was clear of all noise and scent. The white took on the dimensions of a vast hall and cooled into granite. A young woman stood at the end of the hall in a white dress reminiscent of classical Greek styles. Her face could have been Helen of Troy's intoxicating physique. Her opal eyes sought Yugi's and her voice was heady like well-aged wine, "Many troubles burden the world Little Champion. To what end would you see them come?"
Yugi's forehead creased as he broke the question down, "I don't-"
The woman's smile was laced with sorrow and hope, "No you don't. You cannot understand that which you have no knowledge of."
"Who are you?" Yugi asked as he walked the length of the hall to make conversation easier.
"I am the Oracle of Delphi," She raised a hand to quite Yugi's questions. Her voice wrapped around the room with subtle command, "I have limited time before the vapors and the interpreters return and deprive me of this lucid consciousness, listen well. In a few days time there will be two who come baring ill tidings. Heed the first to avoid the second who would lead you to eternal dark. Follow the first messenger's path, but trust only a wise mage seated at the head of halls of learning."
"Where is that?" Yugi's mind reeled as he pieced together the vague warning.
"In the old country of a western empire…" The Oracle's voiced dropped off suddenly, around them the hall began to loose shape and definition. The Oracle's eyes sharpened with panic, "Curse their futures! They return to rob me of consciousness! Darkness rises Yugi, do not fall to it no matter how sweet the path may seem. The bearer of the Millennium Puzzle must not become corrupted or all is lost."
Before Yugi could respond the Oracle's eyes lost their stinging focus and filled with unseeing emotions. Her opal eyes didn't see the small duelist anymore; they darted about looking from one thing to another that was not there. Yugi steeled his muscles as she collapsed forward towards him. The hall dissolved as she fell and Yugi sat upright in bed before the fall was finished.
The light of a waxing quarter moon fell on the foot of the bed. Yugi's breathing stilled slowly as he woke up fully. The world here was stable with solid, unshifting lines and strong colors. Outside the quarter moon watched with pale eyes and weak magic waiting for other nights with terrible prescience.