D&D General How do devils actually get to the world from hell?

[Shades of Eternity]

we should have a machine that opens a portal, but it's like a vending machine..

you have to put in soul tokens to plane shift.

 

[Audiomancer]

Most of them travel to the Material Plane via Oakland… which, as it turns out, is only about a half-hour from Hell (and vice-versa).