[Emissary] - Harry Potter/Justice League crossover

A dimension hopper Harry Potter who gets sent to various worlds to kill those who made it on Death's shit list. This is his seventh world. The seventh and the last time (he hopes) working as Death's Champion, as their Emissary. Spin-off from "Back? Not Really" but it doesn't require knowledge of it. Powerful Harry Potter. Harry Potter/Power Girl pairing. No harem.