one piece tcg: royal blood [op-10] booster box (OP-10) – The Awesome Card Shop New and Existing Cards Can Be Combined to Build Powerful Decks Bandai One Piece Royal Blood

This turns off spellslinger decks incredibly effectively so removal will likely be heading your way throughout the game

Personally, I can't comfortably argue that Green is the most competitive mono-color in commander

Its two useful tools in one clean package

Mitotic Manipulation (an underrated blue ramp piece in its own right) can find Islands and Swamps when you want extra mana, but it can also be a way to dig for another Nazgl to have the Ring tempt you and pump the team

Black Market Connections does amazing work in this deck, like any deck, but you could play Maskwood Nexus if you care about tokens or Phyrexian Arena to keep up the card draw

Alternatively, if you want to learn more about what planeswalkers are and how their cards work, skip ahead to our FAQ section