Stacking the Deck (Multicross, Harry Potter start) StD

"To the well-organized mind, death is but the next great adventure" - Dumbledore said that, which is nice, since I'll be replacing him!
After enjoying an untimely death, the MC is granted the ability to set out on an adventure - reincarnating as almost any character he wants, in any world he desires.
The adventure starts within the Harry Potter world, but will also explore Naruto, Dragon Ball and other popular worlds of fiction.