Stories by Archmage.Potter

The Master of Death's wandering spirit finds a universe where a medieval world has counterparts of people he once knew. His spirit merges with a mortal host named Harren Storm, bastard son of Lord Steffon Baratheon, half-brother of Robert Baratheon, in the year 272 AC. Westeros setting with HP characters built into the world.

With basilisk venom and phoenix tears within him, Harry's body, spirit and magic is transformed and his lifespan is greatly increased. So, when given the chance to go to another universe where he would be able to grow in peace with other immortals around him, Harry accepts it, and finds himself near Rivendell at the start of the Third Age of Arda.