This is a very heavy OTK deck, designed to break boards.
I'm not going to get into all of the combos, some very key cards in this deck (other than standard train deck profiles) are XYZ Import and Negalogia AA-Zeus (pending release: Phantom Rage).
After summoning Superdreadnaught Rail Cannon Juggernaught Liebe, if he battles but does not OTK that turn, he has nothing to counter effects. Often times, when pushing a heavy OTK with limited cards, Liebe is the only monster on your field, so if the turn passes they can easily clear your side of the field. AA-Zeus can be summoned by an attacking XYZ monster and (quick effect): detach 2 material and destroy every other card on the field, except itself. Heavy combo decks can easily be stopped with this card alone, passing the turn off to you to finish with a 3000 attack.
XYZ import is a very, very important card that MUST be run in train decks now. It not only clears a monster from your opponents side of the field, but it allows you to attach said monster to an XYZ monster you control. The only condition is that the opponents monster must have attack less than or equal to the XYZ monster. Being a high attack, heavy-hitting train deck, that condition is easy to meet. This can provide huge benefits for all the Superdreadnought XYZ's, AA-Zeus, even Skypalace... overall an amazing card that must be played.
I've tested this deck for 15+ hours and it is the most consistent deck profile i've used to date. Better than infinitrack/train decks by far, way more consistent and less combos which can stop Niburu.
(side note: 2 shaddoll dragons instead of 1x beast because beast has bricked my entire hand before... dragon is can pop off on flip and graveyard effect so its better to run 2 in this deck)
Hope you enjoy!