In the Apocalypse, I Can Enter Hogwarts

At first, Ian was desperate about transmigrating to the apocalypse...
Until he discovered that he could enter Hogwarts and become a wizard.
As the only extraordinary being, he says the apocalypse is surprisingly appealing, with the world's resources waiting for him to develop and control.
Potions? Alchemy? Failure doesn't matter, we can make it happen by throwing resources at it.