Considering that Ob Nixilis is now three years old and has yet to be reprinted, the planeswalker could continue to rise assuming it sticks in Modern
It is unclear whether I will make a follow-up video in the future, but at the very least, I would like to continue posting on note.
Fell the Mighty and Fumigate will also trigger nicely with Meathook Massacre on your board and give you loads of additional life gain, potentially making for a lovely finale and win condition
Yes, you can flashback a card if it was milled, self-milled, or rummaged (really, regardless of how it got to your graveyard)
Vanquisher's Banner Only a good fit in typal decks, but in those cases, holy heck does this banner fly high
The bar to ban a card in Commander is quite high, and I wouldn't expect any action to be taken if things remain on the current trajectory