This deck now needs to make space for Ichormoon Gauntlet.

I commented on your monoblack deck! I am an anti-counterspell player, so I can't add much to the conversation in this deck but it does look strong.

Oath makes some sense. The number of dangerous low-cost Planeswalkers makes that an outrageous enabler.

What do you think about Lifebane Zombie (probably in sideboard)?

As someone who feels the only thing that could make Jund better is to remove the red and green, this list excites me.

I feel like BFZ Eldrazi and Kaladesh artifacts (with honorary member Hangarback Walker) are going to be a problem in some fashion.

I can tell you box mapping was especially easy in Return to Ravnica block. There was a series of iOS apps that did it for you (one app per set). It seemed like Wizards was aware how bad it was because the print runs became much harder to predict in the very next block (Theros).