The Falsebound Kingdom , Zombies are treated as Fiend monsters
We've seen abilities like it before on cards like Gnarlid Colony, but having it as an enchantment that also gives the counters needed to enable it push it up to a potential green stample for a good while to come
You can either use this to buff up your weaker monsters, turning them into super-strong goliaths using your dead boss monsters or you can weaken your opponents strongest monsters by matching it to your graveyards weakest ATK card
That's where the Technical Step and Standard Step skills come in
Grading involves time, cost, and riskso it should be reserved for cards that are already rare or in pristine condition
A Background enchantment thats in your commanders color identity can, of course, be played in a Commander deck just like any other card