Vodka inspired plot bunny.

After centuries of being Master of Death, Harry Potter cracks and travels back in time.

Knowing full well two Harry Potters cannot exist in the same time.

With the end in mind, he turns the Hallows over to Bartemius Crouch Junior.

Why would he do this?

After centuries of thinking of the past Harry realized that Junior being kept enslaved to his father was wrong.

As for the Dark Mark, MOD Potter removed it, gave Barty a glimpse into his memories and leaves.

Barty being free and essentially immortal now decides to go free Bellatrix and attempt to sway her to his side, crazy as it may be.

They end up ditching the snakecharmer faction, hell they end up ditching their world.

Watch / Read as they wreck havoc upon Nirn, Westeros, Republic Space etc.

Cameos include a stolen Nagini (pre horcrux) because why not.

Possibly finding Sirius Black stranded in an alternate world... being chased by raiders

Much potential, one these days I'll be properly medicated enough to focus long enough to write it