Alich, Calcab, and Farfa all have built-in interaction, so going 2nd we'll be able to trigger them by giving up their special summon effect because we run many lv3 fiend extender anyway since Darius needs fiend lv3. From there, Darius effect is super handy as it cant be destroyed by battle and it destroys opponent's monster. Main phase 2 we can rank it up to Negalogia to wipe the board.
Alich/Calcab/Farfa ratio depends on your matchup as they all do different things (Alich is the best in my testing because it negates monster effect and we can clean it with Negalogia). Against meta, its impossible to go Negalogia freely, so we run big staples to combat/make way for Negalogia to wipe board. Also if forced going first, we will heavily dependent on side deck (you can use floodgate or negation backrow).
Pros: Fun take on BA archetype, bunch of removal cards, and strong staples.
Cons: Bad going first, Eldlich/other GY deck will benefit from Negalogia.