I built this Commander deck just using cards I have pulled from packs I opened in previous HIVE posts. I think everything here has been featured in one way or another.
Problem 1: this deck does not take advantage of the Commander's abilities by spamming -1/-1 counters.
Problem 2: this deck doesn't really incorporate green's mana ramp or big beasties.
Problem 3: This deck doesn't focus on any of the swampy black mechanics to take control of the game.
I think there is something good here, but it would require swapping out about half the cards. Most of them feel like filler, because that is exactly what they are.
If you want to try playing EDH/Commander, this is how I suggest starting if you already have a collection of cards: throw together a deck and just play, even if it isn't even slightly optimized.
If you don't already collect cardboard crack, the preconstructed decks are already set up with good cards and good synergy. I think you don't really understand a deck unless you build it yourself and refine it over time, but even using a preconstructed deck as a head start with some refinement to suit your playstyle is a good way to go, and less frustrating for new players. Regardless, don't be afraid to just dive in and give it a try!